Blacut G and Kleinpell RM (1969) A stratigraphic sequence of benthonic smaller foraminifera from the La Boca Formation, Panama Canal Zone. Contributions from the Cushman Foundation for Foraminiferal Research. 20(1): 1-12.
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Blacut G and Kleinpell RM (1969) A stratigraphic sequence of benthonic smaller foraminifera from the La Boca Formation, Panama Canal Zone.
Contributions from the Cushman Foundation for Foraminiferal Research