Isotope aided studies on non-protein nitrogen and agro-industrial by-products utilization by ruminants proceedings of the Final Research Co-ordination Meeting on Isotope Aided Studies on Non-protein Nitrogen and Agro-Industrial By-products Utilization by Ruminants with Particular Reference to Developing Countries ... held in Vienna from 24 to 26 March 1986 (Internat. Atom. Energy Agency, 1987)
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