000 00279nam a2200121Ia 4500
008 220201s1980 xx 000 0 eng d
082 _a628
_bKAP
100 _aKapur, B
245 0 _aEnvironmental engineering
260 _bKhanna Publisher
_c1980
300 _a134
942 _2ddc
999 _c81298
_d81298