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Received for publication April 26, 1973. Research completed in cooperation with the Univ. of California, Riverside, CA 92502.
Research Entomologist.
Research Geneticist.
Research Entomologist, formerly at Riverside, CA.
We are grateful for the assistance of B. Sharon Schureman and Thomas Gibson, Agricultural Research Technicians, USDA, Riverside in all aspects of the resistance tests and for that of Joseph A. Principe, Agricultural Research Technician, USDA, La Jolla in all aspects of the breeding work.
Mention of a proprietary product in this paper does not constitute an endorsement of this product by the USDA.
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