TY  - BOOK
AU  - Khurana, AK
TI  - Theory and practice of optics and refraction
SN  - 9788131249154
U1  - 617.75 
PY  - 2018///
CY  - Haryana
PB  - Elsevier
KW  - Accommodation and refraction
KW  - Eye
KW  - Optics
KW  - Ophthalmology
KW  - Refraction
ER  -