Author: Sohn, I.G., 1972.:
Title: Late Paleozoic ostracode species from the conterminous United States. A revision of the Paraparchitacea. [U.S. Geol. Surv. Prof. Pap., 711-B.]
Description: Washington 1972. 4to. Pp. iv,17, 290 photos on 12 plates, refs., index. Orig. wrappers.

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