000			00349nam a22001217a 4500
082			_a507 _bMIL.P
100			_aMills Lester, C
245			_aProblem-Solving methods in science teaching / _cby Lester, C Mills and Peter M. Dean
260			_aNew York : _bBureau of publication, _c1960.
300			_a88p. :
650			_aScience teaching
942			_cBK
999			_c622285 _d622285