1972 136, [1] p., 64 pls, frontispiece (portrait), 7 folded sections and tables in rear pocket, 4to, cloth (dust jacket). Dust jacket with some small tears, otherwise good copy. Ex library Dr. H.W.J. van Amerom. Scarce.Mainly on molluscs and brachiopods but describes also coelenterates and arthropods. We added two papers on the same subject by Rehor & Rehorova.