00306nam a2200121Ia 450000500170000000800410001704100080005808200160006610000190008224500350010126000390013630000090017520260720174552.0260720s2005    xx            000 0 und d  aeng  a370.78 BABP  aBabu, Rajendra  aProblem solving in mathematics  aNew DelhibAshish Publishingc2005  a125p