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020 _a0582016371
040 _cChuka University Library
050 _aGF 55
_b.K53 1989
100 _aKnapp Brian
_94519
245 0 _achallenge of the human environment
260 _aLongman
_bBurnt hill
_c1989
942 _cBK
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999 _c7169
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