000			00322nam a2200133 4500
082			_a370 _bHOF.S
084			_2Colon Classification
100			_aHoff, Arthur G
245			_aSecondary school science teaching / _cby Arthur G Hoff
260			_bBlakiston Co.,
300			_a302p. :
650			_aEducation
942			_cBK
999			_c682725 _d682725