TY - BOOK AU - Sommer, Alfred, TI - Epidemiology and statistics for the ophthalmologist SN - 019502656X AV - RE58 .S67 1980 U1 - 617.7/001/82 PY - 1980/// CY - New York PB - Oxford University Press KW - Ophthalmology;Epidemiology;Epidemiologic methods.;Statistics ER -