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Programmed release of Trichogramma amd Chrysopa for control of Heliothis in 1971 / Entomology Research Division, Agric. Res. Serv., USDA, Dept. of Entomology and Dept. of Agricultural Engineering, Texas A & M University, Cotton Incorporated.
by United States Agricultural Research Service Entomology Research Division.;
Year: [1971], Callno: 632.786 PRO [Q]
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