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.

Bibliografske podrobnosti
Corporate Authors: International Labor Office, Berthelot, M, International Labour Office, Lazard, M
Format: Knjiga
Jezik:English
Izdano: [Geneva] Nendehln, Kraus Reprint 1975, 1920.
Serija:Studies and documents. Series B nos. 1-13
Teme:
Coal miners > Germany > Wetphalia.
Coal mines and mining > Germany > Westphalia.
Ruhr river and valley.