Coal production in the Ruhr district (end of May 1920) enquiry by the International Labour Office.

Coal production in the Ruhr district (end of May 1920) enquiry by the International Labour Office.

Bibliographic Details
Corporate Authors: International Labor Office, Berthelot, M, International Labour Office, Lazard, M
Format: Book
Language:English
Published: [Geneva] Nendehln, Kraus Reprint 1975, 1920.
Series:Studies and documents. Series B nos. 1-13
Subjects:
Coal miners > Germany > Wetphalia.
Coal mines and mining > Germany > Westphalia.
Ruhr river and valley.