Search Results       Your search for [author]Simpson, Tracy L., 1937- returned 1 record.           The structure and function of sponge cells : new criteria for the taxonomy of poecilosclerid sponges (Demospongiae) _ New criteria for the taxonomy of poeciloscterid sponges. by Simpson, Tracy L., 1937-; New Haven: 1968. Subject: Poecilosclerida; Sponges - Anatomy.          Add to Book Cart Relevance: 21.81%