TY - `BOOK` AU - Duke-Elder, Stewart AU - Abrams, David TI - Ophthalmic Optics and refraction PB - Kimpton CY - London PY - 1970 LA - eng SE - XIX, 879 S., Ill. T2 - System of ophthalmology M1 - 5 CN - 64 B 2693::5 AN - UBHD-1421430 ER -