539,599 INVERTEBRATE Invertebrate blood cells. Ed. by N. A. Ratcliffe and A. P. Rowley. London 1981 Academic Press 8° Vol. 1. General aspects, animals without true circulatory systems to cephalopods. s. XII, 323, nlb. 1, XLV, il. Vol. 2. Arthropods to urochordates, invertebrates and vertebrates compared, s. XII, nlb. 2, 327 - 641 nlb. 1, XLV, il.