TY  - BOOK
AU  - Cooper,John D.(John Dayne)
AU  - Stevens,Calvin H.
TI  - Paleozoic paleogeography of the Western United States - II
SN  - 1-878861-01-8
AV  - QE640 P35
PY  - 1991///
CY  - Los Angeles, Calif.
PB  - Pacific Section, Society Economic Paleontologists and Mineralogists
N1  - Incluye bibliografia
ER  -