00393nam a2200145Ia 4500008004100000020001500041082001600056100001700072245004200089260004700131300000800178650001400186650002000200653002700220170901s2005    xx            000 0 und d  a8176488364  a371.3bS48I  aSingh, Y. K. 0aInstructional Technology in Education  aNew DelhibA. P. H. Publishing Corp.c2005  a263  aEducation  aSocial sciences  aEducational technology