The Online Books Page

Books by Roy D. Speirs:

Books in the extended shelves:

• Speirs, Roy D. (Roy Dean), 1928-: Contact, residue, and vapor toxicity of new insecticides to stored-product insects (Market Quality Research Division, Agricultural Marketing Service, U.S. Dept. of Agriculture, 1962) (page images at HathiTrust)
• Speirs, Roy D. (Roy Dean), 1928-: Contact, residue, and vapor toxicity of new insecticides to stored-product insects: II (U.S. Agricultural Research Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1970), also by Joe H. Lang (page images at HathiTrust)
• Speirs, Roy D. (Roy Dean), 1928-: Contact, residue, and vapor toxicity of new insecticides to stored-product insects: III (U.S. Dept. of Agriculture, Agricultural Research Service, 1975), also by Lehman L. McDonald and United States. Agricultural Research Service (page images at HathiTrust)
• Speirs, Roy D. (Roy Dean), 1928-: Insect control in farm-stored grain (Dept. of Agriculture, Science and Education Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1979), also by Charles L. Storey, Lyman S. Henderson, and United States. Science and Education Administration (page images at HathiTrust)
• Speirs, Roy D. (Roy Dean), 1928-: Preliminary evaluation of new candidate materials as toxicants, repellents, and attractants against stored-product insects (U.S. Agricultural Research Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1970), also by Lehman L. McDonald, Richard H. Guy, and United States. Agricultural Research Service (page images at HathiTrust)

Find more by Roy D. Speirs at your library, or elsewhere.