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Information circular.

APA Citation

Pennsylvania. Bureau of Topographic and Geologic Survey. (1951). Information circular. [Harrisburg]: Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey.

MLA Citation

Pennsylvania. Bureau of Topographic and Geologic Survey. Information Circular. [Harrisburg]: Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1951.

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