00548nam a2200205Ia 4500001000700000003000500007008004100012010001100053040000900064082001300073100001900086245007300105260004800178300002200226440000500248500000500253503001100258650003300269650004000302Z_1425CHAP220113s1991    xx            000 0 und d  a164514  cCHAP  a636.5 L4  aLeeson, Steven  aCommercial poultry nutrition  /cby Steven Leeson and John D. Summer  aOntario, Canada  :bUniversity Books,c1991  a283 p. : gráfs.  a  a  a163169  aAves de corralxNutrición   aAvicultura I. Summer, John D. II.t.