TY  - BOOK
AU  - Cowan,Alfred
TI  - Refraction of the eye,
AV  - RE925 .C82 1945
U1  - 617.75 
PY  - 1945///]
CY  - Philadelphia
PB  - Lea & Febiger
KW  - Eye
KW  - Accommodation and refraction
KW  - Examination
N1  - Bibliography: p. 264-272
ER  -