Annotated bibliography of Pennsylvania geology -- supplement to 1969
Series: Bulletin G -- no. 6l; Bulletin (Pennsylvania. Bureau of Topographic and Geologic Survey) -- G no. 61.
Publisher: [Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey]
Published: 1972
Place of publication: Harrisburg
Language: eng
Number of pages: 345
Subjects: Geology; Bibliography
Notes: Pennsylvania Geological Survey. Fourth series.