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A users guide to DER permits.

APA Citation

Pennsylvania. Dept. of Environmental Resources. (1990). A users guide to DER permits. [Harrisburg]: Commonwealth of Pennsylvania, Dept. of Environmental Resources.

MLA Citation

Pennsylvania. Dept. of Environmental Resources. A Users Guide to DER Permits. [Harrisburg]: Commonwealth of Pennsylvania, Dept. of Environmental Resources, 1990.

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