TY  - BOOK
AU  - Berry,Edward Wilber
TI  - The flora of the Ripley formation
T2  - U.S. Geological survey.  Professional paper 136
AV  - QE75 .P9 no. 136
PY  - 1925///
CY  - Washington
PB  - U.S.Govt.Print.Off.
KW  - Paleobotany
KW  - Cretaceous
N1  - At head of title: Department of the Interior; Bibliographical references
ER  -