Calculations with years and month in the peruvian quipus /
Nordenskiöl'd, Erland
Calculations with years and month in the peruvian quipus / by Erland Nordenskiöl'd - Göteborg : Elanders Boktryckeri, 1925. - 36 p. + 2 lám. pleg. - Comparative ethnographical studies ; 6 pte.2 .
Calculations with years and month in the peruvian quipus / by Erland Nordenskiöl'd - Göteborg : Elanders Boktryckeri, 1925. - 36 p. + 2 lám. pleg. - Comparative ethnographical studies ; 6 pte.2 .