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Journal Article Method for Making a Grasshopper Survey Get access Robert L. Shotwell Robert L. Shotwell Assistant Entomologist, Division of Cereal and Forage Insects, Bureau of Entomology and Plant Quarantine, U. S. Department of Agriculture Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 28, Issue 2, 1 April 1935, Pages 486–491, https://doi.org/10.1093/jee/28.2.486 Published: 01 April 1935
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R. L. Shotwell (1935) studied this question.
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