Ashmead, D. C. (1925). Anthracite losses and reserves in Pennsylvania. [Harrisburg]: Dept. of Forests and Waters, Topographic and Geologic Survey.
Chicago Style CitationAshmead, Dever Campbell. Anthracite Losses and Reserves in Pennsylvania. [Harrisburg]: Dept. of Forests and Waters, Topographic and Geologic Survey, 1925.
MLA CitationAshmead, Dever Campbell. Anthracite Losses and Reserves in Pennsylvania. [Harrisburg]: Dept. of Forests and Waters, Topographic and Geologic Survey, 1925.
Warning: These citations may not always be 100% accurate.