Physiological approach to the lower animals/ [by] J. A. Ramsay. Ramsay, James Arthur. Physiology, Comparative. Invertebrates Physiology. QP31 .R3 1968 591.1 RAP Bibliography: p. 145-148. London : Cambridge U.P., c1968. c1968. 1968 Text x, 150 p. : eng