World Health Organization
,
United States. Agency for International Development
,
Helen Keller International
,
International Vitamin A Consultative Group
,
United Nations Children's Fund (UNICEF)
,
[Control 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]]
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