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Well-sample record.

APA Citation

Pennsylvania. Bureau of Topographic and Geologic Survey. Well-sample record. [Harrisburg, Pa.]: Bureau of Topographic and Geologic Survey.

Pennsylvania. Bureau of Topographic and Geologic Survey. Well-sample Record. [Harrisburg, Pa.]: Bureau of Topographic and Geologic Survey,

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