000 00322nam a2200133Ia 4500
100 _aWorld health organization
020 _a92-4-120590-3
942 _cBK
654 _a
245 _aVitamin a deficiency and xerophthalmia
260 _aGeneva
_bWorld Health Organization
082 _a616.39
300 _bHb
_c20cm
_a88
999 _c346588
_d346588
041 _aeng