000 00306nam a2200121Ia 4500
008 230222s9999 xx 000 0 und d
082 _a628.5
100 _aDr Raghavan Nambiar K
245 0 _aCourse Book on Environmental Studies
250 _a1
260 _bNalpat Publishers, Kochi
_c2009
942 _cBK
999 _c13900
_d13900