00354nam a2200133Ia 4500008004100000020001500041041001200056082001600068100001300084245007100097260002500168300000800193650001900201221030s9999    xx            000 0 und d  a8120318889  aEnglish  a105.23bPol  aG. Polya 0aHow To Solve It - A New Aspect of Mathematical Methodcby G. Polya  bPHIaNew Delhic2001  a253  aBE Mathematics