008980000a22002170004500003000900000005001700009110008600026245017800112020001800290264004900308490004000357300000900397041000800406650004900414650004200463700003000505700001100535700005600546700003100602700004700633PH-MaWHO20241108112342.0  aJoint WHO/UNICEF/USAID/Helen Keller International/IVACG Meeting (1980 : Jakarta).  aControl of vitamin A deficiency and xerophthalmia : report of a Joint WHO/UNICEF/USAID/Helen Keller International/IVACG Meeting [held in Jakarta from 13 to 17 October 1980].  a92-4-120672-1  aGeneva : bWorld Health Organization,c1982.  a(WHO technical report series ; 672)  a70p.  aeng  aVitamin A deficiencyxPrevention and control  aXerophthalmiaxPrevention and control  aWorld Health Organization  aUNICEF  aUnited States. Agency for International Development  aHelen Keller International  aInternational Vitamin A Consultative Group