TY - BOOK ED - International Atomic Energy Agency ED - Meeting on Tracer Techniques in Studies on the Use of Non-Protein Nitrogen(NPN) in Ruminants TI - Tracer studies on non-protein nitrogen for ruminants III T2 - Panel proceedings series SN - 9201113765 U1 - 636.2 PY - 1976/// CY - Vienna PB - International Atomic Energy Agency KW - Animal husbandry ER -