000 00330nam a2200133Ia 4500
008 221001s2001 xx 000 0 eng d
020 _a817381404X
082 _a301.3 SAN
100 _aSantra, S. C.
245 0 _aEnvironmental science
260 _aKolkata
_bNew Central Book
_c2001
300 _axxix, 1244p.
942 _2ddc
_cBK
999 _c46690
_d46690