003620000a22001450004500060000800000082002100008100002700029100001800056100001900074245003800093260003400131260000900165300000700174650003500181  a100  a636.  208245 HAM  aEdward J, Rowson L E A  aHammond, John  aWalton, Arthur  aArtificial insemination of cattle  aCambridge, Heffer & sons Ltd.  c1947  a61  aCattle-artificial insemination