003050000a22001210004500060000800000082002200008100001800030245003800048260003500086260000900121300000800130650004500138  a100  a637.131 02 87 GOS  aGoss, Emery F  aTechniques of dairy plant testing  aIowa, Iowa state college press  c1953  a350  aDairy plant testing/ milk fat/ cream fat