The Online Books Page

Books by D. D. Questel:

Books in the extended shelves:

• Questel, D. D. (David Dewitt), 1899-: The effects of DDT dust and spray preparations on larvae of the European corn borer (U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1945), also by United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: European corn borer investigations : experiments with insecticides on early sweet corn (Connecticut Agricultural Experiment Station, 1937), also by C. H. Batchelder and Neely Turner (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: Experiments with DDT for the control of the European corn borer infesting sweet corn at Toledo, Ohio, in 1944 (U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1945), also by C. H. Batchelder and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: Field tests with insecticides to control the European corn borer in early market sweet corn at Toledo, Ohio, in 1943 (U.S. Dept. of Agriculture, Bureau of Entomology and Plant Quarantine, 1944), also by United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: Investigations of sprays for control of the European corn borer, Toledo, Ohio, 1945-1946 (U.S. Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1948), also by R. V. Connin and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: Laboratory and field tests of additional organic compounds against the European corn borer (U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1948), also by S. I. Gertler and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: Laboratory and field tests of toxicity of some organic compounds to the European corn borer (U.S. Department of Agriculture, Bureau of Entomology and Plant Quarantine, 1941), also by United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: Laboratory tests of toxicity of additional organic compounds to the European corn borer (United States Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1946), also by S. I. Gertler and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: Laboratory tests of toxicity of some organic compounds to the European corn borer, 1940 to 1948 (U.S. Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1949), also by S. I. Gertler and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: Laboratory tests of toxicity of some organic compounds to the European corn borer, 1941-1943 (U.S. Department of Agriculture, Bureau of Entomology and Plant Quarantine, 1944), also by S. I. Gertler and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: Laboratory tests of toxicity of some organic compounds to the European corn borer, 1947 to 1952 (U.S. Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1952), also by S. I. Gertler and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: Laboratory tests of toxicity of some organic compounds to the European corn borer, January-March 1944 (U.S. Department of Agriculture, Bureau of Entomology and Plant Quarantine, 1944), also by S. I. Gertler, C. V. Bowen, and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: Laboratory tests on toxicity of some phenylhydrazides to the European corn borer (U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1949), also by S. I. Gertler, R. V. Connin, and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
• Questel, D. D. (David Dewitt), 1899-: The toxic or repellent action to the European corn borer of corn plants grown in soil treated with various compounds (U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1949), also by S. I. Gertler, R. V. Connin, and United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)

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