000 00273nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aSharma, S.K.
245 0 _aLearning And Teaching Learning Process
260 _aDelhi
_bIsha Books
_c2007
300 _a302p.
942 _cBK
999 _c12062
_d12062