参考资料
Kurtén, B. (1964). "The evolution of the polar bear, Ursus maritimus Phipps". Acta Zoologica Fennica. 108: 1–26. hdl:10138/37762.
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参考资料
Kurtén, B. (1964). "The evolution of the polar bear, Ursus maritimus Phipps". Acta Zoologica Fennica. 108: 1–26. hdl:10138/37762.
文字编辑:江氏小盗龙
图片来自网络,侵删
Science Technology
微信号|17660820999
新浪微博|江氏小盗龙
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