TECHNICAL REPORT SERIES / WORLD HEALTH ORGANIZA- TION ; 672 542,998 CONTROL Control of vitamin A deficiency and xerophthalmia : report of a joint WHO / UNICEF : [United Nations Children's Fund] / USAID : /US Agency for International Development/ Helen Keller International IVACG : /International Vitamin A Consultative Group/ Meeting. — Geneva : WHO, 1982. — 70,/2/ s., /4/ s. tabl. : wykr. ; 21 cm (Technical Report Series / World Health Organization ; 672) ISBN 92-4-1206-72-01