TY  - BOOK
TI  - The provision of spectacles at low cost
SN  - 9241561084
U1  - 617.7522 
PY  - 1987///
CY  - Geneva
PB  - WHO
KW  - OPHTHALMOLOGY
KW  - Eyeglasses
UR  - http://apps.who.int/iris/handle/10665/39162
ER  -