000 00383nam a2200157Ia 4500
008 180323s9999 xx 000 0 und d
082 _a371.33
100 _a   Rao, V.K
245 0 _aEducational technology
250 _a1st
260 _aNew Delhi
_bIndian Pub.House
300 _aNot covered syllabus
500 _a1090
650 _aEducational - technology
942 _cBOOK
999 _c6897
_d6897