000 00310nam a2200133Ia 4500
008 230108s9999 xx 000 0 und d
100 _aFehr W.R.
245 0 _aPrinciples of Cultivar Development Vol. 2
260 _bMacmillan
260 _c1987
365 _b1305.50
650 _aBreeding
942 _cBK
999 _c240553
_d240553