00413nam a2200121Ia 450000500170000000800410001702000150005805000200007310000150009324501150010826000480022365000200027120251229192634.0251229s9999    xx            000 0 und d  a9022009246  aSF 201.5   .P47  aKorver, S. 0aPerfomance testing of AI bulls for efficiency and beef production in dairy  and dual purpose breeds.cS Korver  aNetherlandsb  Pudoc Wageningen pressc1987  aBeef Production