000 00517nam a2200181Ia 4500
008 191130s2011##################000#0#eng##
020 _a9788131300985
040 _aACL
_cACL
082 _a372.358 NAS
245 _aEducational technology
_cDr. Nasrin
260 _aNew Delhi
_b[publisher not identified]
_c2011
300 _ax, 91p. : ill. ; 22cm
500 _aIncludes bibliographical references
650 _aEducational
990 _af2c312a3ac10000c6a703d29724eef38
991 _a253806
999 _c258214
_d258214