00544nam a2200169Ia 4500001000700000003000500007008004100012010001100053040000900064100001900073245007300092260004400165300001000209502009000219650003700309650002800346Z_1329CHAP220113s1978    xx            000 0 und d  a164417  cCHAP  aWaller, John C  aSlowly degraded protein sources for ruminants  /cpor John C. Waller  aLincoln, Nebraska  :bThe author,c1978  a102 h  aThesis (Doctor of Phylosophy) -- University of Nebraska. Department of Animal Science  aProteína en nutrición animal  aRumiantesxNutrición