00606nam a2200157Ia 4500001000700000003000500007008004100012010001100053040000900064100001900073245010500092260004300197300000900240500015600249650004300405Z_3774CHAP220113s1976    xx            000 0 und d  a163603  cCHAP  aRuiz, Manuel E  aNew animal feeding systems based on the intensive use of tropical by products  /cpor  Manuel E Ruiz  aTurrialba, Costa Rica  :bCATIE,c1976  a7 p.  areimpreso de : Proceedings International Symposium Feed Composition.  Animal Nutrient Requeriments, and computerization of diets (1 : Utah, USA : 1976)  aAlimentos y alimentaciónxTrópicos