Author: Regnéll, G., 1951.:
Title: Revision of the Caradocian-Ashgillian cystoid fauna of Belgium, with notes on isolated pelmatozoan trem fragments. [Mém. Inst. R. Sci. Nat. Belg., 120.]
Description: Bruxelles. Folio. Pp. 47,[13], 6 plates of photos, bibliogr. Clot-backed boards. Title stamped, good otherwise.

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