Bedrock geologic map of the Allentown West quadrangle, Lehigh and Berks Counties, Pennsylvania
By: by Avery Ala Drake, Jr.
Contributors: Drake, Avery Ala, 1927-
Series: Geologic quadrangle map -- Gq-1727
Publisher: U.S. Geological Survey
Published: 1993
Place of publication: Reston, VA
Language: eng
Subjects: Geology -- Pennsylvania -- Lehigh County -- Maps.; Geology -- Pennsylvania -- Berks County -- Maps.
Genres: Maps.
Notes: Relief shown by contours and spot heights.

Includes 3 colored cross sections, text, bibliography, 2 tables, and location map.

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