000 00326nam a2200133Ia 4500
008 240913s9999||||xx |||||||||||||| ||und||
082 _a500 DE/T
100 _aAnil Kumar De.Arnab Kumar De
245 0 _aTextbook of Environmental Science
250 _aNULL
260 _bMed Tec
_aNULL
_c2014
300 _a151
942 _cBKS
999 _c19148
_d19148