Improved production systems as an alternative to shifting cultivation

Improved use of plant nutrients

report of the expert consultation on better exploitation of plant nutrients held in Rome 18-22 April 1977

Organic materials and soil productivity in the Near East

papers presented at the FAO/SIDA Workshop on the Use of Organic Materials for Improving Soil Productivity in the Near East, held in Alexandria, Egypt, 9-18 October 1978

Organic recycling in Africa

papers presented at the FAO/SIDA Workshop on the Use of Organic Materials as Fertilizers in Africa, held in Buea, Cameroon, 5-14 December 1977