TY  - GEN
AU  - Sommer,A.
TI  - Field guide to the detection and control of xerophthalmia
SN  - 92-4-154162-8
AV  - 2nd ed. 
PY  - 1982///
CY  - Geneva : 
PB  - World Health Organization
KW  - Xerophthalmia
KW  - Diagnosis, prevention and control
KW  - Guidelines
ER  -