00670cam a22002411 4500 med47002958 DLC 20260227111607.0 800225s1947 ilua 000 0 eng med47002958 (OCoLC)6019530 DLC NNSU-OP DLC premarc QP475 .Z65 1947 612.84 Zoethout, William Douwes, 1871- Physiological optics, by W. D. Zoethout. 4th ed. With 220 illus. Chicago, Professional Press, 1947. 430 p. illus. 24 cm. Includes bibliographies. Physiological optics. 38712 38712