00321nam a2200121Ia 450000500170000000800410001704100080005808200150006610000160008124500550009726000380015230000090019020260720174538.0260720s2004    xx            000 0 und d  aeng  a371.2 KALE  aKalra, Alka  aEfficient School Management and role of Principals  aNew DelhibA P H Publishingc2004  a190p