000 00338nam a2200133Ia 4500
008 211217s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aClarke, George L
245 0 _aElements of ecology
250 _a1st
260 _bJohn Wiley
_aNew York
_c1954
300 _axiv,560p p.
942 _c1
999 _c378411
_d378411