000 00312nam a2200133Ia 4500
999 _c13611
_d13611
008 140515s9999||||xx |||||||||||||| ||und||
040 _aUPES LIBRARY
_bEnglish
100 _aSaxena, Y K
_917373
245 _aEnvironment explained
260 _aNew Delhi:
_bExcel Books,
_c2004
300 _a177p.
942 _cBK