000
00295nam a2200133Ia 4500
020
_a
978-8121915472
082
_a
628.5
100
_a
Duggal K N
_9
160
245
0
_a
Elements of Environmental Engineering
250
_a
1
260
_b
S.Chand
_c
2009
_a
New Delhi
650
_a
CE
_9
65
942
_c
BK
999
_c
14463
_d
14463