000 00282nam a2200133Ia 4500
008 161121s9999 xx 000 0 und d
100 _aHUGHES (HD) ; METCALFE (DS)
245 0 _aCrop production
260 _cNIL
365 _b0
650 _aNIL
652 _a#N/A
942 _cBK
999 _c56028
_d56028