The supervision of elementary subjects
| Egile nagusia: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
New York, London
D. Appleton and company
[c1929].
|
| Saila: | Half-title: Appleton series in supervision and teaching, ed. by A.S. Barr and W.H. Burton
|
| Gaiak: |