The Geographical Distribution of Color and of Other Variable Characters in the Genus Junco: A New Aspect of Specific and Subspecific Values Jonathan Dwight
| Autor: | Swarth, H. S. |
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| Zdroj: | The Condor, 1918 Jul 01. 20(4), 142-143. |
| Databáze: | JSTOR Journals |
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