Zinc ores at Friedensville, Lehigh County, Penna
By: by Benjamin LeRoy Miller
Contributors: Pennsylvania. Bureau of Topographic and Geologic Survey
Series: Bulletin. Bureau of Topographic and Geologic Survey -- no. 70; Progress report (Pennsylvania. Bureau of Topographic and Geologic Survey) -- 70.
Publisher: Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geological Survey
Published: 1923
Place of publication: [Harrisburg, Pa.]
Language: eng
Subjects: Geology; Zinc ores
Notes: Pa. State Docs. class. no. PY G345/4.17/8:no. 70.

Caption title.

March 20, 1923.

Includes bibliographical references (page 7).