Coal production in the Ruhr district (end of May 1920) enquiry by the International Labour Office.
| Corporate Authors: | , , , |
|---|---|
| Formato: | Livro |
| Idioma: | English |
| Publicado em: |
[Geneva]
Nendehln, Kraus Reprint
1975, 1920.
|
| Colecção: | Studies and documents. Series B
nos. 1-13 |
| Assuntos: |