000			00308nam a22001217a 4500
082			_a372.35 _bGEG.S
100			_aGega Peter, C
245			_aSciience in elementary education / _cby Peter, C Gega
260			_aLondon : _bJohn wiley & sons, _c1966.
300			_a451p. :
650			_aEducation
942			_cBK
999			_c627046 _d627046