00318    a2200097   4500020001500000082001700015245012000032260003400152300002000186650001400206  a0851984592  a636.085bNUT  aThe nutrient requirements of ruminant livestockbtechnical review by an agricultural research council working party  aWallingfordbCABIc1980g1980  axvi,351p.c24cm  aLivestock