Feeding strategies for improving productivity of ruminant livestock in developing countries: IAEA (Editor). Proceedings of a Combined Advisory Group Meeting and a Research Coordination Meeting Organized by the Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture and Held in Vienna, 13–17 March 1989. International Atomic Energy Agency Publication (STI/PUB/823), A-1400 Vienna, Austria, 1989. 233 pp., Austrian Schillings 600.-, ISBN 92-0-111189-4, ISSN 0074-1876