000 00327nam a2200145Ia 4500
008 220421s9999||||xx |||||||||||||| ||und||
020 _c215/-
040 _aET
100 _aSURESH K
245 0 _aENVIRONMENTAL ENGINEERING AND MANAGEMENT
260 _bS.K KATARIA
_aDELHI
300 _a496
500 _a34962
942 _cBK
999 _c40977
_d40977