0
Richard A. Briggs has written:
'The Battle of the Ruhr Pocket' -- subject(s): Ruhr Pocket, Battle of the, Germany, 1945
The Ruhr is a river in germany.
No, the word "Ruhr" does not have an umlaut. It is spelled as "Ruhr" without any diacritic marks.
No, the Ruhr is in Germany.
Essen is in the Ruhr but Duesseldorf is some distance to the south of the Ruhr.