00527nam a2200181Ia 450000500170000000800460001702000180006303700130008104000200009404100130011408400250012710000210015224500240017325000060019726000410020330000150024454600860025920250508165917.0008  250505s9999    xx            000 0 eng d  a0-13-139981-0  aTextBook  aFEDLbengcFEDL  aeng2eng  a155.413, STE/RqFEDL  aSiegler Robert S 0aChildren's thinking  a2  aNew Jeresy, USAbPrentice Hallc1991  axvi, 429p.  aPhotocopy and gifted by H.O.D. Namita Ranganathan in memory of Prof. Arvind Gaysu