000 00303nam a2200133Ia 4500
008 161121s9999 xx 000 0 und d
100 _aEHRLICK (PR)ETC
245 0 _aEcoscience: Population, resources & envi
260 _cWH Freeman
365 _b0
650 _aNIL
652 _a#N/A
942 _cBK
999 _c54696
_d54696