00456naa a2200169 a 450000100080000000500110000800800410001910000180006024500620007826000060014065300100014665300160015665300180017265300150019065300150020577300660022011026352007-04-27               bl ---       0--  u    #d1 aKRUIF, A. de.  aFactors influencing the fertility of a cattle population.  c0  aFATOR  aFERTILIDADE  aGADO DE CORTE  aINFLUENCIA  aREPRODUCAO  tJournal of Reproduction and Fertilitygv.54, p.507-518, 1978.