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040 _aUPES LIBRARY
_bEnglish
082 _a363.7
_bCUN
100 _aCunningham, William P
_91773
245 _aPrinciple of environmental science
_b: inquiry and applications
260 _aNew Delhi :
_bTata McGraw Hill,
_c2004
300 _a424p.
650 _aEnvironmental science
942 _cBK
999 _c13864
_d13864