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Reconnaissance survey-- Brownsville/Monongahela Valley, Pennsylvania/West Virginia.

APA Citation

United States. National Park Service. Denver Service Center. (1991). Reconnaissance survey-- Brownsville/Monongahela Valley, Pennsylvania/West Virginia. [Denver, Colo.]: U.S. Dept. of the Interior, National Park Service, Denver Service Center.

MLA Citation

United States. National Park Service. Denver Service Center. Reconnaissance Survey-- Brownsville/Monongahela Valley, Pennsylvania/West Virginia. [Denver, Colo.]: U.S. Dept. of the Interior, National Park Service, Denver Service Center, 1991.

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