 | Cook, W. C. (William Carmichael), 1895- 4n | (1) |
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 | Cook, W. C. (William Carmichael), 1895- 4n; Life history, host plants, and migrations of the beet leafhopper in the western United States / by William C. Cook. Washington : U.S. Dept. of Agriculture, 1967. | |
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