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(FAO - INADES, 1977, 48 p.)

Published by arrangement with the
Institut africain pour la d�veloppement �conomique et social
B.P. 8008, Abidjan, C�te d'Ivoire

FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
Rome 1977

FAO Economic and Social Development Series No. 3/13

Reprinted 1977, 1982, 1984, 1992

P-69
ISBN 92-5-100618-0

© French edition, Institut africain pour le d�veloppement �conomique et social (INADES) 1967
© English edition, FAO 1970