000 00267nam a22001217a 4500
999 _c155236
_d155236
082 _a
_b
100 _aR A Sharma
245 _aAdvanced educational technology/
_cby R A Sharma.
260 _a
_bLoyal Book,
_c1993.
300 _a604p.
650 _a
942 _cBK