000 00440nam a2200169Ia 4500
008 170101s1987 xx 000 0 und d
082 _a631.53 F24P
100 _aFEHR, Walter R
245 0 _aPrinciples of cultivar development
260 _bNew York
_c1987
300 _a2v
650 _aPLANT - BREEDING
653 _aFIELD CROPS -- BREEDING
653 _aFIELD CROPS -- VARITIES
653 _aPLANT - BREEDING
942 _2ddc
_cB
_09
999 _c98874
_d98874