by United States. Department of Agriculture. Office of Information
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Background on U.S. agriculture
Fact book of U.S. Agriculture
Fighting the fever tick
Atoms vs. the screwworm
Congressional guide to information servi...
The food we eat
The geology of New Hampshire
R-1 forest insect and disease damage sur...
Incidence of insects, diseases, and othe...
Pictorial handbook on common dragon and ...
Forest insect and disease survey