Fire clays of Pennsylvania, by J. B. Shaw.

By: Shaw, Joseph Bradfield, 1884-Material type: TextTextReference number:1965037Series: Mineral resource report ; M10.Publication details: [Harrisburg] Pennsylvania Topographic and Geologic Survey, 1928. Description: 69 p. illus., map. 23 cmSubject(s): Fire-clay | Clay -- Pennsylvania
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"Pennsylvania and Geological Survey. 4th series."

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