000 00305nam a2200121Ia 4500
008 220108s9999||||xx |||||||||||||| ||und||
100 _aDURGA NATH DHAR
245 0 _aENVIRONMENTAL SCIENCE AND ETHICS
260 _bVAYU EDUCATION OF INDIA
_c2009
300 _a236
650 _aENVIRONMENTAL
942 _cREF
999 _c21170
_d21170