@book{UBHD-1421430, author={Duke-Elder, Stewart and Abrams, David}, title={Ophthalmic Optics and refraction}, publisher={Kimpton}, address={London}, year={1970}, pages={XIX, 879 S., Ill.}, language={eng}, number={ARRAY(0x5643ecc30ff0)}, series={System of ophthalmology}, library={UB [Signatur: 64 B 2693::5]}, }