570.6
Cus
M
Cushman, Joseph Augustine, 1881-
A monograph of the foraminiferal family
polymorphinidae recent and fossil, by Joseph
A. Cushman and Yoahiaki Ozawa. Washington, Smithsonian Institution, 1930
195 p. láms. 25 cm.
"From the Proceedings of the United States
National Museum. v. 77, art. 6 (1930) p. 1-185"