Cushman, J. A.; Cole, W. S. (1930). Pleistocene Foraminifera from Maryland. Contributions from the Cushman Laboratory for Foraminiferal Research. 6(4): 94-100.
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Cushman, J. A.; Cole, W. S.
1930
Pleistocene Foraminifera from Maryland
Contributions from the Cushman Laboratory for Foraminiferal Research