Becker, L. E. & Dusenbury, A. N. 1958. Mio-Oligocene (Aquitanian) foraminifera from the Goajira Peninsula, Colombia. Cushman Foundation for Foraminiferal Research, Special Publication. 4: 1-48.
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Becker, L. E. & Dusenbury, A. N. 1958. Mio-Oligocene (Aquitanian) foraminifera from the Goajira Peninsula, Colombia.
Cushman Foundation for Foraminiferal Research, Special Publication