000 00688nam a2200253 a 4500
005 20210219153320.0
008 991125n 000 0 u
035 _aUPN01000091058
100 _aYerushalmy, Michal
222 _aEDUCATIONAL STUDIES IN MATHEMATICS
245 _aOvercoming visual obstacles with the aid of the supposer
300 _a199-220
362 _a21, No. 3, 1990
505 _aEnero 1991
653 0 _aDIAGRAMAS
653 0 _aEAC
653 0 _aESCUELA SECUNDARIA (MATEMATICAS)
653 0 _aGEOMETRIA
653 0 _aPROGRAMAS DE LA COMPUTADORA
653 0 _aVISUALIZACION
700 _aChazan, Daniel
904 _aAC
_b028869
905 _aArticulo
999 _c73882
_d73882