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E. Green-Pedersen, S. (1974). Guide to the Sources of the History of Africa, bd. 8 Scandinavia, Sources in Denmark, Norway and Sweden. (Inter Documentation Company AG Zug Switzerland, 1971). 101 s. Historie/Jyske Samlinger, 10. Hentet fra https://tidsskrift.dk/historiejyskesamling/article/view/38929