000 00315nam a2200133Ia 4500
005 20250612122217.0
008 250601s1996 xx 000 0 eng d
020 _a8171693075
100 _aR.K.Sinha
245 0 _aEnvironmental sanitaion
260 _aDelhi
_bKalyani piub.
_c1996
300 _a190
942 _2ddc
_cBK
999 _c1325
_d1325