000 00304nam a22001337a 4500
020 _a978-8122472288
041 _aENG
100 _aRao . C.S
245 _aEnvironmental Pollution Control Engineering
260 _aDelhi
_bAgeinternational.
_c1991
300 _a431
650 _aFS
856 _uFS ( 36 )
999 _c859
_d859