000 00301nam a22001457a 4500
003 OSt
020 _aNA
040 _c0
082 _222
_a628
100 _aBasak, N. N.
245 _aEnvironmental engineering /
260 _bTata McGraw-Hill,
_cc2006.
300 _a0
_bill. ;
942 _2ddc
_cCIVIL
_07
999 _c4427
_d4427