000 00317 a2200133 4500
082 _a378.99
_bCha/T
090 _c2602
_d2602
100 _aChand, Tara
245 _aEducational technology
_cTara Chand
260 _aNew Delhi
_bAnmol
_c2003
300 _a416 p.
_c22 cm.
650 _aEducational Technology
942 _cBK
999 _c2501
_d2510