Dema, I. S. (1965). Nutrition in relation to agricultural production: A manual for extension supervisors in agriculture, home economics, rural health, community development and for workers in other fields related to nutrition in Nigeria and the countries of West Africa. Food and Agriculture Organization of the United Nations.

Dema, I. S. Nutrition in Relation to Agricultural Production: A Manual for Extension Supervisors in Agriculture, Home Economics, Rural Health, Community Development and for Workers in Other Fields Related to Nutrition in Nigeria and the Countries of West Africa. Rome: Food and Agriculture Organization of the United Nations, 1965.

Dema, I. S. Nutrition in Relation to Agricultural Production: A Manual for Extension Supervisors in Agriculture, Home Economics, Rural Health, Community Development and for Workers in Other Fields Related to Nutrition in Nigeria and the Countries of West Africa. Food and Agriculture Organization of the United Nations, 1965.