000
00293nam a2200121Ia 4500
008
220201s1989 xx 000 0 eng d
082
_a
628
_b
BAL
100
_a
Baljeet S Kapoor
245
0
_a
Environmental engg an overview
260
_b
New Delhi: Khanna
_c
1989
300
_a
512
942
_2
ddc
999
_c
85697
_d
85697