Calculations with years and months in the Peruvian quipus / by Erland Nordenskiöld.
- Nordenskiöld, Erland, 1877-1932.
- Date:
- [1925]
Licence: In copyright
Credit: Calculations with years and months in the Peruvian quipus / by Erland Nordenskiöld. Source: Wellcome Collection.
6/47 (page 4)
