00302nam a2200121Ia 450000500170000000800410001704100080005808200160006610000260008224500250010826000380013330000090017120260720174551.0260720s2004    xx            000 0 und d  aeng  a311.22 KHAF  aKhan, Sharief Mohamed  aEducational research  aNew DelhibA P H Publishingc2004  a164p