000 00309nam a2200121Ia 4500
008 250409s9999 xx 000 0 und d
020 _a81-7319-410-6
082 _a628
_bSUB
100 _aSubramanian,V
245 2 _aA textbook in environmental science
260 _aNew Delhi
_bNarosa,
_c2002
365 _a260
999 _c250946
_d250946