000 00305nam a2200133Ia 4500
008 161121s9999 xx 000 0 und d
100 _aSIMMONDS (NW)
245 0 _aPrinciples of Crop improvement
260 _cLongman Scientific & Tec.
365 _b0
650 _aNIL
652 _a#N/A
942 _cBK
999 _c56441
_d56441