000
00323nam a2200145Ia 4500
008
220105s9999 xx 000 0 und d
041
_a
ENGLISH
082
_a
365.5
100
_a
"Duggal, K. N."
245
0
_a
Elements of Environmental Engineering
250
_n
1
260
_b
S.Chand
365
_b
250
942
_c
BK
999
_c
204457
_d
204457