a tributary of the Rhine
[ Syn: ruhr , ruhr river ]
a major industrial and coal mining region in the valley of the Ruhr river in northwestern Germany
[ Syn: ruhr , ruhr valley ]
a tributary of the Rhine
[ Syn: ruhr , ruhr river ]
a major industrial and coal mining region in the valley of the Ruhr river in northwestern Germany
[ Syn: ruhr , ruhr valley ]