Proceedings of the international symposium on the biology of the Sipuncula and Echiura / Institute for Biological Research, June, 18-25, 1970, Kotor - Kotor: Institute for Biological Research, 1970 Vol. 1; xxiii, 355p.Vol. 2; 204p. Subjects--Topical Terms: Zoology Universal Decimal Class. No.: 595.145+595.144(082.2)