Brown iron ores in Pennsylvania
By: by J. Ross Corbin
Contributors: Pennsylvania. Bureau of Topographic and Geologic Survey
Series: Bulletin. Bureau of Topographic and Geologic Survey -- no. 63; Progress report (Pennsylvania. Bureau of Topographic and Geologic Survey) -- 63.
Publisher: Bureau of Topographic and Geological Survey
Published: 1923
Place of publication: [Harrisburg, Pa.]
Language: eng
Subjects: Geology; Iron ores
Notes: Pa. State Docs. class. no. PY G345/4.17/8:no. 63

Typescript.

Caption title.

February 15, 1923.

Includes bibliographical references (page 7).