Author: Ferrari, A. and G. B. Vai
Title: Revision of the Famennian rhynchonellid genus Plectorhynchella.
Description: Bologna, Museo Geologico di Bologna, 1973. 8vo (24.0 x 16.8 cm). 45 pp., 17 text figures, six plates.Printed wrappers. = Two plates show the mountain face where specimens were collected, the others show shells, mainly of the Devonian Plectorhynchella collinensis (Frech), including the Neotype. Published in the Museum's Giornale di Geologia. Inscription on front wrapper, otherwise a very good clean copy.

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