Répertoire des institutions et projets de recherche agronomique en Afrique de l'Ouest : projet pilote 1972-1973
Directory of agricultural research institutions and projects in West Africa : pilot project 1972-73
National methods of collecting agricultural statistics : supplement nº 4 : December 1979 : Canada, El Salvador, Honduras, Panama, Peru, United States of America
National methods of collecting agricultural statistics : supplement nº 5 : March 1980 : Australia, Hong Kong, Japan, Malaysia, Singapore, Sri Lanka