ENDescription
See also: http://id.loc.gov/authorities/subjects/sh85115785
Related Subjects
The graph displays the other subjects mentioned on the same pages as the subject "Ruhr (Germany : Region)". If the same subject occurs on a page with "Ruhr (Germany : Region)" more than once, it appears closer to "Ruhr (Germany : Region)" on the graph, and is colored in a darker shade. The closer a subject is to the center, the more "related" the subjects are.