000 00403nam a2200157Ia 4500
008 221030s9999 xx 000 0 und d
020 _a8120308816
041 _aEnglish
082 _a105.23
_bMas
100 _aG. M. Masters
245 0 _aIntroduction To Environmental Engineering & Science
_cby G. M. Masters
260 _bPHI
_aNew Delhi
_c2000
300 _a460
650 _aChemistry
942 _cBK
999 _c7534
_d7534