000			00370nam a2200145Ia 4500
008			170101s1971 xx 000 0 und d
082			_a370.78 L44E
100			_aLEHMAN, Irvin J
245		0	_aEducational research : readings in focus
260			_bN.Y. _c1971
300			_a460p
650			_aEDUCATIONAL RESEARCH
653			_aEDUCATIONAL RESEARCH
942			_2ddc _cB
999			_c45349 _d45349