TY  - BOOK
AU  - Douglass,Raymond C.
TI  - The foraminiferal genus Orbitolina in North America: a study of the genus Orbitolina, its type species, morphology, and stratigraphic and geographic distribution in North America
AV  - QE75 .P9 no. 333
U1  - 563.1 
PY  - 1960///
CY  - Washington.
PB  - U.S. Govt. Print. Off.
KW  - Orbitolina
KW  - Foraminifera, Fossil
KW  - North America
KW  - Paleontology
KW  - Cretaceous
N1  - Bibliography: p. 45-50
ER  -