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by U.s. Dept of Agriculture; Porte, William S.; Entomology Research Division; et al.
by U. s. Dept. of Agriculture; Agricultural Research Service; Chambers, Roger
by Agricultural Research Service, Research
by United States. Agricultural Research Service. Dairy Products Laborator
by Roy van Driesche (University of Massachusetts ); Mark Hoddle (University of California, Riverside ); Ted Center (Agricultural Research Service, USA )