Lentz, Thomas L. Primitive nervous systems [by] Thomas L. Lentz. - New Haven Yale University Press 1968. - viii, 148 p. illus. 23 cm. Bibliography: p. 125-138. LCCN: 68027760 Subjects--Topical Terms: Nervous system--Invertebrates. LC Class. No.: QL935 / .L43 Dewey Class. No.: 592