Summary of isotopic age determinations in Pennsylvania
By: by D. M. Lapham and S. I. Root.
Contributors: Root, Samuel I., joint author.
Series: Commonwealth of Pennsylvania. Dept. of Environmental Resources. Bureau of Topographic and Geologic Survey. Information circular 70
Published: 1971
Place of publication: Harrisburg
Language: eng
Number of pages: 29
Subjects: Radioactive dating -- Pennsylvania.; Geology -- Pennsylvania.
Notes: Bibliography: p. 27-29.
"Pennsylvania Geological Survey, fourth series."