Laufer, Berthold, 1874-1934 · [New York] : The Museum · leaf 35
the fourtooth-like formations would represent tusks not unlike those identified by Hein on the demon-shields of the Dayak. Nevertheless,in this as well as in the following figure (9), the Gilyak in the village of Chai onthe northeast coast of Saghalin Island, from whom these patterns were obtained…
Decoration and ornament -- Amur River Valley (China and Russia)
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