000 00416nam a22001697a 4500
003 OSt
005 20240801165710.0
008 180813b xxu||||| |||| 00| 0 eng d
020 _a9788131312582
040 _aOCLC
_bEnglish
082 _223
_a371.33
_bDAN
100 _aDangwal,K.L.
245 _aEducational Technology
260 _aNew Delhi
_bAPH Publishing Corporation
300 _avii,237p
_c23cm
942 _2ddc
_cBK
999 _c94
_d94