แม่แบบ:R:zh:Laufer:1916
Laufer, Berthold (1916), chapter Supplementary Notes On Walrus and Narwhal Ivory, in T'oung Pao[1], volume 17, DOI: , pages 348–389
Laufer, Berthold (1916), chapter Supplementary Notes On Walrus and Narwhal Ivory, in T'oung Pao[1], volume 17, DOI:10.1163/156853216X00102, pages 348–389