000 00284nam a2200109Ia 4500
008 230125s9999 xx 000 0 und d
100 _aNAIDU P.CH. APPALA
_915084
245 0 _aFEEDBACK METHODS AND STUDENT PERFORMANCE
260 _bDISCOVERY PUB.
_c2007
300 _a60
942 _cBK
999 _c111223
_d111223