00512nam a2200181Ia 450000500170000000800410001704000190005804100120007708200150008910000130010424500610011726000420017830000160022050400450023665000250028170000140030685000100032020240531094309.0131103s9999    xx            000 0 und d  aLoreto College  aEnglish  a510.7bFOX  aFox, J.L  aOperations with sets and numberscJ.L. Fox and D. Plaing  aLondonbOxford university pressc1973  a43p.b ill.  aThe new mathematics for primary teachers  aMathematics - method  aPlaing, D  aLCBED