000 00270nam a2200109Ia 4500
008 230125s9999 xx 000 0 und d
100 _aCHAUDHARY S.B.J.R
_915120
245 0 _aMASTERY OF TEACHING SKILLS
260 _bDISCOVERY PUB.
_c2006
300 _a341
942 _cBK
999 _c111260
_d111260