- Ravenstein, Ernest George
- University of Illinois at Urbana-Champaign, University Library
30.6 x 28.1 cm. 1:3,000,000. Includes inset map of Katanga Company's Concession. Printed color. Lithography.
- Katanga Expedition (1891-1892)
Mining corporations--Congo (Democratic Republic)
Expeditions & surveys
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