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Ecological research series.

APA Citation

United States. Environmental Protection Agency. Office of Research and Monitoring. (1972). Ecological research series. Washington: U. S. Environmental Protection Agency; for sale by the Supt. of Docs., U. S. Govt. Print. Off..

MLA Citation

United States. Environmental Protection Agency. Office of Research and Monitoring. Ecological Research Series. Washington: U. S. Environmental Protection Agency; for sale by the Supt. of Docs., U. S. Govt. Print. Off., 1972.

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