Common rocks and minerals of Pennsylvania
By: by Davis M. Lapham [and] Alan R. Geyer
Contributors: Geyer, Alan R., author
Series: Pennsylvania. Bureau of Topographic and Geologic Survey. Educational series -- no. 1; Educational series (Pennsylvania. Bureau of Topographic and Geologic Survey) -- 1.
Publisher: [Department of Internal Affairs, Topographic and Geologic Survey]
Published: 1962
Place of publication: Harrisburg]
Language: eng
Number of pages: 22
Subjects: Petrology; Mineralogy
Notes: Bibliography: p. 21.