000			00500nam a22001577a 4500
008			020421b xxu||||| |||| 00| 0 eng d
020			_a0 8053 0856 3
040			_aG.U _cG.U _dT.O.D
082			_220th _a510 BIL
245			_aA problem of solving Approach for Elementary School Teachers / _cBillstein,Rick
250			_a2nd ed.
260			_aMenlo Park : _bThe Benjamin/Cumming Publishing Company, _cc1984
300			_axvi,723pages : _bill.som.col.; _c24cm.
650			_vmathematics
942			_2ddc _cBOOK
999			_c966 _d966