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Nordenskiöld, Erland: Deductions sug- gested by the geographical distribution of some post-columbian words used by the Indians of South America. Göteborg 1922 (Comparative Ethnographical Stu- dies, V.)

Nordenskiold, Erland:Die positiven Ve- ränderungen indianischer Kultur in Post- kolumbischer Zeit, En: Ipek, I, Leipzig 1925.

Nordenskiold, Erland: Modifications in Indian culture through inventions and loans. Göteborg 1930 (Comparative eth- nographical studjes, VIII).