00476nam a2200157Ia 4500001001000000003000500010008004100015010001100056040000900067245010700076260005100183300000900234440001800243650003300261700002400294Para_6920CHAP220125s1999    xx            000 0 und d  a204236  cCHAP  aInfluence of monensi on feed efficiency and puberty of beef heifers /c by J.G. Berardinelli [et. al.]  aMorgantown, W.Va. :b West Virginia University  a9 p.  aBulletin; 684  aCarne de res x producción  aBerardinelli, J. G.