Cushman, J. A.; Hughes, D. D. (1925). Some Later Tertiary Cassidulinas of California. Contributions from the Cushman Laboratory for Foraminiferal Research. 1: 11-17.
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Cushman, J. A.; Hughes, D. D.
1925
Some Later Tertiary Cassidulinas of California
Contributions from the Cushman Laboratory for Foraminiferal Research