000 00280nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aClifford B.Knight
245 0 _aBasic concepts of ecology
260 _bmacmillan & co
260 _c1969
365 _b67.13
942 _cBK
999 _c197704
_d197704