000 00397nam a22001577a 4500
999 _c16453
_d16453
020 _a8123929072
022 _a978-8123929071
082 _a628NEL
100 _aNelson
245 _aTextbook of Environmental Engineering
260 _aNew Delhi:
_bScientific International,
_c2014.
300 _a151p. ;
650 _aEnvironmental engineering
650 _aEnvironmental health
942 _cBK