Books by R. L. Shotwell:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Shotwell, R. L. (Robert Leslie): The comparative effectiveness of poisoned bait and sprays for grasshopper control in Lyman County, S.Dak., 1947 (U.S. Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1949), also by United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)- Shotwell, R. L. (Robert Leslie): Controlling grasshoppers in alfalfa with chlordane and toxaphene sprays (U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1951), also by United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
- Shotwell, R. L. (Robert Leslie): Observations on mass flights and other activities of the migratory grasshopper (U.S. Dept. of Agriculture, 1955), also by J. R. Parker and Roy C. Newton (page images at HathiTrust)
- Shotwell, R. L. (Robert Leslie): Tests with sprays for controlling grasshoppers on farm lands in North Dakota and Texas, 1950-51 (U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1952), also by United States. Bureau of Entomology and Plant Quarantine (page images at HathiTrust)
Find more by R. L. Shotwell at your library, or elsewhere.