00299nam a2200121Ia 450000500170000000800410001704100080005808200170006610000170008324500270010026000410012730000090016820260720174601.0260720s2005    xx            000 0 und d  aeng  a371.333 JAIE  aJain, Purabi  aEducational technology  aNew DelhibDominant Publishersc2005  a298p