00859nam a2200373 a 450000100080000000500110000800800410001910000150006024500400007526000360011530000110015165000120016265000120017465000210018665000100020765000100021765000190022765000110024665000130025765000210027065000140029165000220030565000270032765000090035465000120036365000090037565000240038465000090040865000110041765000100042865000150043870000150045370000170046810360632021-08-30       1987    bl uuuu     u00u1 u    #d1 aFEHR, W.R.  aPrinciples of cultivar development.  aNew York (USA): Macmillanc1987  a761 p.  aALFALFA  aALGODON  aARACHIS HYPOGAEA  aARROZ  aAVENA  aBRASSICA NAPUS  aCEBADA  aCULTIVOS  aFITOMEJORAMIENTO  aGRAMINEAS  aHELIANTHUS ANNUUS  aLEGUMINOSAS FORRAJERAS  aMAIZ  aMOSTAZA  aPAPA  aREMOLACHA AZUCARERA  aSOJA  aTABACO  aTRIGO  aVARIEDADES1 aFEHR, E.L.1 aJESSEN, H.J.