Atlas of preliminary geologic quadrangle maps of Pennsylvania
By: compiled and edited by Thomas M. Berg, Christine M. Dodge
Contributors: Pennsylvania. Bureau of Topographic and Geologic Survey
Series: Map / Commonwealth of Pennsylvania, Department of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey -- 61; Map (Pennsylvania. Bureau of Topographic and Geologic Survey) -- 61
Publisher: Pennsylvania Geological Survey
Published: 1981
Place of publication: Harrisburg
Language: eng
Number of pages: 636
Subjects: Geology; Maps
Notes: "Pennsylvania Geological Survey fourth series."

Bibliography: p. 7-11.