A comparison of variation, behavior and evolution in the sea bird genera Uria and Cepphus
Storer, R.W. (1952). A comparison of variation, behavior and evolution in the sea bird genera Uria and Cepphus. Univ. Calif. Publ. Zool. 52(2): 121-222, plates 1-2
In: University of California Publications in Zoology. University of California: Berkeley. ISSN 0068-6506; e-ISSN 1559-3215, more
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