Life and growth
| Egile nagusia: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
New york, London
D. Appleton-Century company
[1938].
|
| Saila: | Half-title: Progressive education association publications. Commission on human relations
|
| Gaiak: |