The Online Books Page

Books by R. H. Nelson:

Books in the extended shelves:

• Nelson, R. H.: Control of the gladiolus thrips on corms during storage (United States Department of Agriculture, Bureau of Entomology and Plant Quarantine, 1939), also by C. A. Weigel and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Nelson, R. H.: Conversion tables and equivalents for use in work relating to insect control (U.S. Bureau of Entomology and Plant Quarantine, 1952), also by United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Nelson, R. H.: Conversion tables and equivalents for use in work relating to insect control (U.S. Department of Agriculture, Bureau of Entomology and Plant Quarantine, 1940), also by United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Nelson, R. H.: A method for testing residual deposits (U.S. Department of Agriculture, Bureau of Entomology and Plant Quarantine, 1949), also by P. G. Piquett, E. R. McGovran, and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Nelson, R. H.: The relative toxicity to house flies of endrin and isodrin in kerosene sprays (U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1952), also by W. A. Gersdorff, Norman Mitlin, and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)

Find more by R. H. Nelson at your library, or elsewhere.