00747cam a22001931 4500001001300000003000400013005001700017008004100034010001700075035001900092040005200111042001200163050001800175110010900193245012700302260007800429300001800507650002800525e 40000275 DLC20260227111228.0760923s1940 dcu 000 0 eng c ae 40000275  a(OCoLC)2460420 aU.S Off. of educ. LibrarycOCUdOCUdOCoLCdDLC apremarc00aLB2805b.A4722 aAmerican Association of School Administrators.bCommittee on certfication of superintendents of schools.14aThe superintendent of schools and his work;bfinal report of the Committee on certification of superintendents of schools. aWashington, D.C.,bAmerican association of school administrators,cc1940. a48 p.c23 cm. 0aSchool superintendents.