000 00276nam a2200121Ia 4500
100 _aKumar, Arvind
020 _a978-81-89473-85-3
942 _cBK
245 _aUnderstanding environment
260 _aOxford book company, Jaipur
_c2009
082 _a301.3 Kum
300 _a355
999 _c39564
_d39564