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Spruce and giant conifer aphids
Spruce broom rust
The production and conservation of fats and oils in the United States supplement
House fly control
The plant disease situation
Proportion of various rough products in second-growth stands
Classification of the Cryphalinae with descriptions of new genera and species
Report of the President's committee on wild-life restoration
A national program of research for forage, range and pasture
Prepackaging fruits and vegetables by cooperatives