000 00296nam a2200121Ia 4500
008 221001s1982 xx 000 0 eng d
082 _a574.5 TIV
100 _aTivy, Joy
245 0 _aHuman impact on the ecosystem
260 _aLondon
_bOliver & Boyd
_c1982
300 _a243p.
942 _2ddc
_cBK
999 _c13270
_d13270