Related Clues:

• River past Duisburg
• Lake Biel feeder
• Longest river wholly in Switzerland
• Germany's ___ Basin
• River by Interlaken
• Herman industrial area
• Industrial area, oddly rough and ready at first
• Chief coalmining region of Germany
• Jockey's unseated at start of 4 o'clock in German urban area
• Chief coalmining and industrial region of Germany
• Industrial region in Germany
• German region of coal mining and heavy industry
• River that flows from the Bernese Alps
• ___ Valley, European steelmaking region
• High Rhine feeder