000 00256nam a2200097Ia 4500
020 _a978-81-7371-540-2
942 _cBK
245 _aTextbook of environmental studies .-978-81-7371-540-2
260 _a Hyderabad
_bUniversities Press
_c2005
300 _axv,276
999 _c425884
_d425884
041 _aeng