The secret of the Peruvian quipus
By: by Erland Nordenskiöld.
Contributors: Fuhrken, George Ernest.
Series: His Comparative ethnographical studies -- 6 (part 1-2)
Publisher: Elanders boktryckeri aktiebolag
Published: 1925
Place of publication: [Göteborg
Language: eng
Subjects: Quipu.
Notes: English translation by Dr. G.E. Fuhrken.

Title varies: pt. 2, Calculations with years and months in the Peruvian quipus.

Bibliography: pt. 2, p. [35]-36.

WSU:WSU Holland copy lacks pt. 1.