000 00300nam a2200133Ia 4500
008 240913s9999||||xx |||||||||||||| ||und||
082 _aGS 363.739 2
100 _aNULL
245 0 _aAir pollution
250 _aNULL
260 _bPragati Prakashan
_aMeerut
_c1990
300 _a671 p
942 _cBKS
999 _c4740
_d4740