Soil, crop and water management systems for rainfed agriculture in the Sudano-Sahelian Zone: Proceedings of an international workshop ... 1987 ... Niamey, Niger

agriculture

Paperback

ISBN: 978-92-9066-169-6

ISBN-10: 92-9066-169-0

International Crops Research Institute for the Semi-Arid Tropics ยท 1989