The Ruhr area
Subtitle: its structure and economic importance
By: [by Karl H. Koranyi and Myrtle Brickman]
Contributors: Brickman, Myrtle, joint author.
Series: IT-4
Publisher: U.S. Govt. Print. Off.
Published: 1949
Place of publication: Washington
Language: eng
Number of pages: 62
Subjects: Ruhr River and Valley -- Industries.
Notes: Includes bibliographies.