 | Insect pests Biological control. | (2) |
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 | Population models to appraise the limitations and potentialities of Trichogramma in managing host insect populations / . Knipling, E. F. 1n Washington : U.S. Dept. of Agriculture, 1968. | |
| Population models to test theoretical effects of sex attractants used for insect control / Knipling, E. F. 1n Washington, D.C. : Agricultural Research Service, U.S. Dept. of Agriculture, 1966. | |
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