003100000a22001210004500060000800000082001400008100002800022245003400050260004300084260000900127300000800136650004400144  a100  a637.1 NEV  aNevens, William Barbour  aPrinciples of milk production  aLondon, Mc Graw- Hill Book Company Inc  c1951  a443  aMilk production/ dairy cattle - feeding