000 00312nam a22001217a 4500
999 _c862
_d862
020 _a81-261-2041-X
082 _aCir. 371.335 C361 C2008
100 _aChand, Tara
245 _aEducational technology
260 _aBangalore:
_bAnmol Publications PVT.LTD.
_cC2008
300 _aviii, 416p. : ill. ; 21cm
942 _cBK