00563nam a2200157Ia 450000100060000000300050000600500170001100800410002811001070006924500290017626000530020530000170025849000500027565000460032565000340037182740BIBL20180810021829.0920814|1960||||waua   |||||||00010|eng|d20aNational Education Association of the United States. Department of Elementary School Principals2Local10aThose first school years0 aWashingtonbNational Education Associationc1960  a253 p.bill.0 aThe National Elementary Principal, v.40; no.1 0aSchool management and organization2Local 0aEducation , Elementary2Local