TY - GEN TI - Use of urea and ammonium compounds for ruminants, 1971-1973 T2 - Annotated bibliography, No. N4B U1 - 636.2016 PY - 1990/// CY - Oxon PB - CABI KW - AGRICULTURE KW - ANIMAL SCIENCE KW - Annotated bibliography KW - RUMINANT FEEDING KW - RUMINANT NUTRITION KW - RUMINANTS KW - UREA ER -