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Progress report - Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geologic Survey.

APA Citation

Pennsylvania. Bureau of Topographic and Geologic Survey. (1919). Progress report - Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geologic Survey. Harrisburg: Pennsylvania Geological Survey.

MLA Citation

Pennsylvania. Bureau of Topographic and Geologic Survey. Progress Report - Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic And Geologic Survey. Harrisburg: Pennsylvania Geological Survey, 1919.

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