000			00373nam a22001217a 4500
082			_a372 _bEDW.T
100			_aEdwards Clifford, H
245			_aTeaching elementary school science : _bcompetency-based approach / _cby Clifford, H Edwards and Robert L. Fisher
260			_aNew York : _bPraeger publishers, _c1977.
300			_a464p. :
650			_aEducation
942			_cBK
999			_c623253 _d623253