004010000a22001210004500060000800000082001400008245006000022260004500082260000900127300000900136310004500145650008900190  a100  a630.5 YEA  aKeeping livestock ealthy: year book of agriculture 1942  aUnited states, Department of agriculture  c1942  a1239  aDepartment of agriculture, United states  aInsect control-agriculture/artificial insemination/farm animals-nutritional diseases