000
00255nam a2200109Ia 4500
008
220201s1995 xx 000 0 eng d
100
_a
Sharma, JL
245
0
_a
Public health engineering
260
_b
Satya Prakashan
_c
1995
300
_a
514
942
_2
ddc
999
_c
86578
_d
86578