From Field and Study
| Autor: | Hawbecker, Albert C., Stoner, Emerson A., Moran, E. C., Grater, Russell K., Duff, C. V., Willett, G., Clay, C. I., Hargrave, Lyndon L., Bailey, Alfred M., Niedrach, Robert J., Bryant, Harold C., Cowan, Ian McTaggart, Vestal, Elden H., Davis, John M., Martin, E. W., Sibley, Charles |
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| Zdroj: | The Condor, 1939 May 01. 41(3), 120-127. |
| Databáze: | JSTOR Journals |
| Externí odkaz: |
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