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by U.s. Dept of Agriculture; Close, B. P.; White, T. H.; et al.
by U.s. Dept of Agriculture; Porte, William S.; Entomology Research Division; et al.
by Us Dept. of Agriculture; Chambers, Jackson
by Carver, George Washington; U.s. Dept. of Agriculture; Chambers, Roger
by U.s. Dept of Agriculture; Chambers, Roger
by U.s. Dept. of Agriculture; Chambers, Roger
by Agriculture, Us Dept. of; Chambers, Sam