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  • NIST micronutrients measurement quality assurance program winter 2005 comparability studies : results for round robin LVII fat-soluble vitamins and carotenoids in human serum and round robin 22 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo95441

  • NIST micronutrients measurement quality assurance program summer 2004 comparability studies : results for round robin LVI fat-soluble vitamins and carotenoids in human serum and round robin 21 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo96023

  • NIST micronutrients measurement quality assurance program summer 2003 comparability studies : results for round robin LIV fat-soluble vitamins and carotenoids in human serum and round robin 19 ascorbic acid in human serum / David L. Duewer; Katherine E. Sharpless; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo96691

  • NIST micronutrients measurement quality assurance program winter 2003 comparability studies : results for round robin LIII fat-soluble vitamins and carotenoids in human serum and round robin 18 ascorbic acid in human serum / David L. Duewer; Katherine E. Sharpless; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo103313

  • NIST micronutrients measurement quality assurance program summer 2001 comparability studies : results for round robin L fat-soluble vitamins and carotenoids in human serum and round robin 15 ascorbic acid in human serum / David L. Duewer; Sam A. Margolis; Katherine E. Sharpless; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo101121

  • NIST micronutrients measurement quality assurance program summer 2006 comparability studies : results for round robin LX fat-soluble vitamins and carotenoids in human serum and round robin 25 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo96140

  • NIST micronutrients measurement quality assurance program summer 2005 comparability studies : results for round robin LVIII fat-soluble vitamins and carotenoids in human serum and round robin 23 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo97864

  • NIST micronutrients measurement quality assurance program summer 2002 comparability studies : results for round robin LII fat-soluble vitamins and carotenoids in human serum and round robin 17 ascorbic acid in human serum / David L. Duewer; Margaret C. Kline; Sam A. Margolis; Katherine E. Sharpless; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo95618

  • NIST micronutrients measurement quality assurance program winter 2002 comparability studies : results for round robin LI fat-soluble vitamins and carotenoids in human serum and round robin 16 ascorbic acid in human serum / David L. Duewer; Sam. A. Margolis; Katherine E. Sharpless; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo97434

  • NIST micronutrients measurement quality assurance program winter 2006 comparability studies : results for round robin LIX fat-soluble vitamins and carotenoids in human serum and round robin 24 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo103900

  • NIST micronutrients measurement quality assurance program winter 2004 comparability studies : results for round robin LV fat-soluble vitamins and carotenoids in human serum and round robin 20 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo104457

  • NIST micronutrients measurement quality assurance program summer 2010 comparability studies : results for round robin LXVIII fat-soluble vitamins and carotenoids in human serum and round robin 33 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo95810

  • NIST micronutrients measurement quality assurance program summer 2009 comparability studies : results for round robin LXVI fat-soluble vitamins and carotenoids in human serum and round robin 31 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo96990

  • NIST micronutrients measurement quality assurance program winter 2011 comparability studies : results for round robin LXIX fat-soluble vitamins and carotenoids in human serum and round robin 34 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo104714

  • NIST micronutrients measurement quality assurance program summer 2011 comparability studies : results for round robin LXX fat-soluble vitamins and carotenoids in human serum and round robin 35 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo103604

  • NIST micronutrients measurement quality assurance program winter 2010 comparability studies : results for round robin LXVII fat-soluble vitamins and carotenoids in human serum and round robin 32 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo97039

  • NIST micronutrients measurement quality assurance program winter 2009 comparability studies : results for round robin LXV fat-soluble vitamins and carotenoids in human serum and round robin 30 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo100018

  • NIST micronutrients measurement quality assurance program summer 2008 comparability studies : results for round robin LXIV fat-soluble vitamins and carotenoids in human serum and round robin 39 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo104638

  • NIST micronutrients measurement quality assurance program winter, spring, and fall1996 comparability studies : results for round robin XXXVI, XXXVII, and XXXVIII fat-soluble vitamins and carotenoids in human serum and round robin 9 ascorbic acid in human serum / David L. Duewer; Margaret C. Kline; Sam A. Margolis; Katherine E. Sharpless; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo98740

  • NIST micronutrients measurement quality assurance program summer 2007 comparability studies : results for round robin LXII fat-soluble vitamins and carotenoids in human serum and round robin 27 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo95442

  • NIST micronutrients measurement quality assurance program winter 2007 comparability studies : results for round robin LXI fat-soluble vitamins and carotenoids in human serum and round robin 26 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo96711

  • NIST micronutrients measurement quality assurance program winter 2001 comparability studies : results for round robin XLIX fat-soluble vitamins and carotenoids in human serum and round robin 14 ascorbic acid in human serum / David L. Duewer; Sam A. Margolis; Katherine E. Sharpless; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo103394

  • NIST micronutrients measurement quality assurance program winter and summer 2000 comparability studies : results for round robin XLVII and XLVIII fat-soluble vitamins and carotenoids in human serum and round robin 13 ascorbic acid in human serum / David L. Duewer; Sam A. Margolis; Katherine E. Sharpless; Jeanice B. Thomas; Margaret C. Kline.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo95039

  • NIST micronutrients measurement quality assurance program winter and summer 1999 comparability studies : results for round robin XLV and XLVI fat-soluble vitamins and carotenoids in human serum and round robin 12 ascorbic acid in human serum / David L. Duewer; Sam A. Margolis; Katherine E. Sharpless; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo94604

  • NIST micronutrients measurement quality assurance program winter, spring, and fall 1998 comparability studies : results for round robin XLII, XLIII, and XLIV fat-soluble vitamins and carotenoids in human serum and round robin 11 ascorbic acid in human serum / David L. Duewer; Margaret C. Kline; Sam A. Margolis; Katherine E. Sharpless; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo104109

  • NIST micronutrients measurement quality assurance program winter, spring, and fall1997 comparability studies : results for round robin XXXIX, XL, and XLI fat-soluble vitamins and carotenoids in human serum and round robin 10 ascorbic acid in human serum / David L. Duewer; Margaret C. Kline; Sam A. Margolis; Katherine E. Sharpless; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo100261

  • NIST micronutrients measurement quality assurance program winter 2008 comparability studies : results for round robin LXIII fat-soluble vitamins and carotenoids in human serum and round robin 28 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo97746

  • NIST micronutrients measurement quality assurance program summer 2012 comparability studies : results for round robin LXXII fat-soluble vitamins and carotenoids in human serum and round robin 37 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo103605

  • NIST micronutrients measurement quality assurance program winter 2013 comparability studies : results for round robin LXXIII fat-soluble vitamins and carotenoids in human serum and round robin 38 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2014.
    • 2014
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo100013

  • NIST micronutrients measurement quality assurance program summer 2013 comparability studies : results for round robin LXXIV fat-soluble vitamins and carotenoids in human serum and round robin 39 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2014.
    • 2014
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo98583

  • NIST micronutrients measurement quality assurance program Winter, Spring, and Fall 2014 comparability studies : results for round robin LXXV fat-soluble vitamins and carotenoids in human serum and round robin 40 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2015.
    • 2015
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo96098

  • NIST micronutrients measurement quality assurance program Summer 2014 comparability studies : results for round robin LXXVI fat-soluble vitamins and carotenoids in human serum and round robin 41 ascorbic acid in human serum / David L. Duewer; Jeanice B. Thomas.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2015.
    • 2015
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo102157

  • An approach to the metrologically sound traceable assessment of the chemical purity of organic reference materials / David L. Duewer, Reenie M. Parris, Edward V. White, Willie E. May, Howard Elbaum.

    • Text
    • Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2004.
    • 2004
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo97731

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