000			00349nam a2200157Ia 4500
008			220612s9999 xx 000 0 und d
020			_a9788189983055
082			_b
100			_aGUPTA, U.C.
245		0	_aTEACHING SCIENCE
260			_bKHEL SAHITYA KENDRA, NEW DELHI _c2007
300			_a366
650			_aEducation
942			_cBK
999			_c8862 _d8862
250			_a