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Displaying 1-5 of 5 results for author "Mason, Richard R."
Sampling Western Spruce Budworm larvae by frequency of occurrence on lower crown branches / R.R. Mason and R.C. Beckwith.
- Text
- [Portland, Or. (319 S.W. Pine St., P.O. Box 3890, Portland 97208)] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [1990]
- 1990
Forecasting outbreaks of the Douglas-fir tussock moth from lower crown cocoon samples [microform] / R.R. Mason, D.W. Scott, and H.G. Paul.
- Text
- Portland, Or. (333 S.W. First Ave., Portland 97208-3890) : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1993.
- 1993
Monitoring larval populations of the Douglas-fir tussock moth and the western spruce budworm on permanent plots [microform] : sampling methods and statistical properties of data / R.R. Mason and H.G. Paul.
- Text
- Portland, Or. (333 S.W. First Ave., P.O. Box 3890, Portland 97208-3890) : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [1994]
- 1994
Case history of population change in a Bacillus thuringiensis-treated vs. an untreated outbreak of the western spruce budworm [microform] / R.R. Mason and H.G. Paul.
- Text
- [Portland, Or.] (333 S.W. First Ave., P.O. Box 3890, Portland 97208-3890) : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [1996]
- 1996
Slavery in America [microform] : an essay for the times / by Richard R. Mason.
- Text
- Boston : Press of Crocker and Brewster, 1853.
- 1853
- 1 Item
Item details Format Call Number Item Location Text Sc Micro F-15854 Schomburg Center - Research & Reference Available - Can be used on site. Please visit New York Public Library - Schomburg Center to submit a request in person.
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