000			00370nam a2200145Ia 4500
005			20260205102647.0
008			260111s9999||||xx |||||||||||||| ||und||
082			_a544.4 M294U
100			_aMehrotra,Ram Charan
245		0	_aUtkrishth Gasain Vaigyanik Padhiti Ki Kahani(H )
260			_aNew Delhi _bNCERT _c1990
300			_a59p.
690			_aGases
942			_cBK
999			_c249977 _d249977