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Washington, D.C. : Educational Policies Commission, National Education Association of the United States and the American Association of School Administrators, [1940]
Educational Policies Commission.
Washington, D.C. : Educational Policies Commission, National Education Association of the United States and the American Association of School Administrators, [1944]
Educational Policies Commission.
Washington, D. C. : Education policies commission, National education association of the United States and the American association of school administrators, [1941]
Educational Policies Commission.
Washington : Educational Policies Commission, National Education Association of the United States : and the American Association of School Administrators, [1955]
Educational Policies Commission.
Washington, D.C. : Educational Policies Commission, National Education Association of the United States, and the American Association of School Administrators, [1938]
Educational Policies Commission.
Washington, D. C. : Educational Policies Commission, National Education Association of the United States, and the American Association of School Administrators, [1938]
Educational Policies Commission.
Washington, D.C. : Educational Policies Commission, National Education Association of the United States and the Department of Superintendence, [1937]