Philadelphia workers in a changing economy .
| Egile nagusia: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Philadelphia
University of Pennsylvania Press
[1956].
|
| Saila: | Industrial Research Dept. Wharton School of Finance & Commerce, University of Pennsylvania. Resaerch studies,38
|
| Gaiak: |