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Survey methods for some economic insects

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By: United States. Plant Protection Division.

Publication info: Hyattsville, MD, Plant Pest Control Division, Agricultural Research Service, United States Department of Agriculture, [1969]

Holding Institution: U.S. Department of Agriculture, National Agricultural Library
Watch for new small grain insects

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By: United States. Plant Protection Division.

Publication info: [Washington, U.S. Govt. Print. Off.], 1970

Holding Institution: U.S. Department of Agriculture, National Agricultural Library