000 00277nam a2200133Ia 4500
008 161121s9999 xx 000 0 und d
100 _aWALT (KEF)
245 0 _aSystems analysis in Ecology
260 _cA.P
365 _b0
650 _aNIL
652 _a#N/A
942 _cBK
999 _c41064
_d41064