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Directory of field activities of the Bureau of Biological Survey, 1939.

APA Citation

United States. Dept. of Agriculture. (1939). Directory of field activities of the Bureau of Biological Survey, 1939. Washington, D.C.: U.S. Dept. of Agriculture.

MLA Citation

United States. Dept. of Agriculture. Directory of Field Activities of the Bureau of Biological Survey, 1939. Washington, D.C.: U.S. Dept. of Agriculture, 1939.

Warning: These citations may not always be complete (especially for serials).