- Hassenstein, Bruno
- University of Illinois at Urbana-Champaign, University Library
30.7 x 42.0 cm. 1:5,000,000. Relief shown by form lines. Explorers' routes indicated in color. Hand colored. Lithography.
- Rivers--Congo (Democratic Republic)--Maps
Congo (Democratic Republic)--Discovery and exploration, European
Angola--Discovery and exploration, European
Discovery Explorer routes
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