National Education Association of the United States. Department of Supervisors and Directors of Instruction Bezüge im Wissensnetz Verfasst (1) DNB-Titeldaten The ... yearbook of the Department of Supervisors and Directors of Instruction of the National Education Association Creator (1) DNB-Titeldaten The ... yearbook of the Department of Supervisors and Directors of Instruction of the National Education Association Administrative Überordnung der Körperschaft (1) GND-Körperschaften National Education Association of the United States