000 00287nam a2200121Ia 4500
100 _aSommer, Alfred
020 _a92 154 127 X
942 _cBK
245 _aField guide to the detection and control of xerophthalmia
260 _aWHO, Geneva
_c1978
082 _a617.7 WHO
300 _a47
999 _c19203
_d19203