Research Catalog

  • American National Standard N537 : radiological safety standard for the design of radiographic and fluoroscopic industrial x-ray equipment / American National Standards Institute Subcommittee N43-7 ; under the sponsorship of the National Bureau of Standards.

    • Text
    • Washington : U. S. Dept. of Commerce, National Bureau of Standards : for sale by the Supt. of Docs., U. S. Govt. Print. Off., 1977.
    • 1977

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