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.

書目詳細資料
Corporate Authors: International Labor Office, Berthelot, M, International Labour Office, Lazard, M
格式: 圖書
語言:English
出版: [Geneva] Nendehln, Kraus Reprint 1975, 1920.
叢編:Studies and documents. Series B nos. 1-13
主題:
Coal miners > Germany > Wetphalia.
Coal mines and mining > Germany > Westphalia.
Ruhr river and valley.