TY  - BOOK
AU  - Ross CA
TI  - Paleobiogeography
U1  - 560.9 
PY  - 1976///
CY  - Pennsylvania
PB  - Down, Hutchinson & Ross
KW  - Paleobiogeography
KW  - Pennsylvania
N1  - Published in Benchmark Papers in Geology, v.31
ER  -