Culture Confrontation in the Lower Congo: From the Old Congo Kingdom to the Congo Independent State with Special Reference to the Swedish Missionaries in the 1880's and 1890's.
- Stockholm: Gummesson, 1970.
- 339, (1) p. (8) leaves of plates, (1) leaf of map, illus. 25 cm.
- Studia missionalia Upsaliensia, 14 .