TY  - BOOK
AU  - Butts,Charles
TI  - Geology and mineral resources of the Bellefonte quadrangle, Pennsylvania,
AV  - QE75 .B9 no. 855
PY  - 1936///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Geology
KW  - Pennsylvania
KW  - Centre County
KW  - Mines and mineral resources
N1  - At head of title: United States Department of the Interior; Bibliographical foot-notes
ER  -