000 00307nam a2200121Ia 4500
008 170101s2009 xx 000 0 und d
082 _a577 DAV
100 _aDave, D.
245 0 _aTextbook of environmental studies
260 _aDelhi
_bCengaga Learning India
_c2009
300 _a319p.
942 _2ddc
_cBK
999 _c264381
_d264381