00446nam a2200145Ia 450000500170000000800460001703700290006304000210009204100130011308400230012610000160014924500710016526000500023630000140028620250508153309.0008  250505s9999    xx            000 0 eng d  aBooks to be hide in OPAC  aFEDL bengcFEDL  aeng2eng  a371.2, MOR/OqFEDL  aMort Paul R 0aPrinciples of school administration : A synthesis of basic concept  aNew York, USAbMcGraw-Hill Book Companyc1946  axiv,388p.