000 00335nam a2200133Ia 4500
008 241226s9999 xx 000 0 und d
020 _a8182051584
082 _a370
_bSHA
100 _aSharma, S. K.
245 0 _aLearning and teaching
260 _aDelhi :
_bIsha Books ,
_c2005.
300 _a302+v Pages;
650 _aEducation
999 _c177175
_d177175