Endrika:Tsiahy:zh:Laufer:1913
Laufer, Berthold (1913), chapter Arabic and Chinese Trade in Walrus and Narwhal Ivory, in T'oung Pao, volume 14, , pages 315–364
Laufer, Berthold (1913), chapter Arabic and Chinese Trade in Walrus and Narwhal Ivory, in T'oung Pao, volume 14, →DOI, pages 315–364