TY  - BOOK
AU  - Behre,ChasH.
TI  - Slate in Northampton County, Pennsylvania,
T2  - Pennsylvania. Topographic and Geologic Survey. Bulletin M9
AV  - TN958 .B4
PY  - 1927///
CY  - Harrisburg, Pa.
PB  - Dept. of Forests and Waters, Topographic and Geologic Survey
KW  - Slate
KW  - Pennsylvania
KW  - Northampton County
KW  - Geology
N1  - At head of title: Pennsylvania Geological Survey, fourth series; Two folded plates and folded maps in pocket; Bibliographical foot-notes
ER  -