Coal Resources of Cambria and Blair Counties, Pennsylvania: Part I--Coal Crop Lines, Mined-Out Areas, and Structure Contours [Mineral Resource Report 96, Part 1]
Harrisburg, PA: Commonwealth of Pennsylvania, 1990. Paperback. Disbound ex-library copy, with hole-punched pages held together by clip at top edge, heavily illustrated in b&w. Book has one library stamp and withdrawl stamp over top of it, blacked out sticker to full-title, otherwise clean.