Outstanding scenic geological features of Pennsylvania
By: Alan R. Geyer, William H. Bolles.
Contributors: Bolles, William H., joint author.; Pennsylvania. Bureau of Topographic and Geologic Survey.
Series: Environmental geology report ;; 7
Publisher: Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey : may be purchased from State Book Store
Published: 1979
Place of publication: Harrisburg, Pa
Language: eng
Subjects: Geology -- Pennsylvania -- Guidebooks.; Pennsylvania -- Pictorial works.
Notes: Includes bibliographies and indexes.