000
00279nam a2200121Ia 4500
008
220201s1980 xx 000 0 eng d
082
_a
628
_b
KAP
100
_a
Kapur, B
245
0
_a
Environmental engineering
260
_b
Khanna Publisher
_c
1980
300
_a
134
942
_2
ddc
999
_c
81298
_d
81298