The corn root aphid and methods of controlling it. [Rev. May 1949 by C.M. Packard.
Material type:
TextSeries: Farmers' bulletin (United States. Department of Agriculture) ; no. 891.Publication details: Washington, U. S. Govt. Print. Off., 1949]Description: 7 p. illus. 24 cmSubject(s): LOC classification: - S21 .A6 rev. no. 891b
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Contribution from Bureau of Entomology and Plant Quarantine.
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