Cushman, J. A.; Hedberg, H. D. (1941). Upper Cretaceous Foraminifera from Santander del Norte, Colombia, S. A. Contributions from the Cushman laboratory for foraminiferal research. 17(4): 79-100.
184097
Cushman, J. A.; Hedberg, H. D.
1941
Upper Cretaceous Foraminifera from Santander del Norte, Colombia, S. A.
Contributions from the Cushman laboratory for foraminiferal research