TY  - BOOK
AU  - Shaw,Joseph Bradfield
TI  - Fire clays of Pennsylvania,
T2  - Pennsylvania and Geological Survey. Bulletin M-10
PY  - 1928///
CY  - [Harrisburg]
PB  - Pennsylvania Topographic and Geologic Survey
KW  - Fire-clay
KW  - Clay
KW  - Pennsylvania
N1  - "Pennsylvania and Geological Survey. 4th series."
ER  -