000			00312nam a2200145Ia 4500
008			220421s9999||||xx |||||||||||||| ||und||
020			_c90
040			_aBED
100			_aYadav , Siddhiqi
245		0	_aTeaching of Science
260			_bARYA BOOK DEPOT _aN.D.
300			_a135
500			_a3917
942			_cBK
999			_c3917 _d3917