State leadership in improving instruction a study of the leadership service function of state education departments, with special reference to Louisiana, Tennessee, and Virginia
| Egile nagusia: | |
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| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
New York
Teachers College Columbia University
1940.
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| Saila: | Teachers college, Columbia University. Contribution to education nno. 820
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| Gaiak: |