Skewed Age Ratios of Breeding Mallards in the Nebraska Sandhills.
| Autor: | Cunningham, Zach J.1, Powell, Larkin A.1, Vrtiska, Mark P.2, Stephens, Scott E.3, Walker, Johann A.4 |
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| Zdroj: | American Midland Naturalist. Apr2016, Vol. 175 Issue 2, p280-285. 6p. |
| Databáze: | Academic Search Ultimate |
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