00477nam a2200157Ia 450000500170000000800460001703700120006304000210007504100130009608400210010910000180013024500910014826000410023930000130028065000260029320250508151201.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDL bengcFEDL  aeng2eng  a371.2, WILqFEDL  aWiles Kimball 0aSupervision for better schools : The role of the offcial leader in program development  aNew York, USA bPrentice Hall c1950  axv,330p.  aSchool Administration