Charles Otis Whitman (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Charles Otis Whitman" in Spanish language version.

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archive.org

Extinct Birds. London: Hutchinson & Co. 1907.

books.google.com

Burkhardt, R. W. (2005). Patterns of behavior: Konrad Lorenz, Niko Tinbergen, and the founding of ethology. University of Chicago Press. ISBN 0226080900.

doi.org

dx.doi.org

d'Elia, J. (2010). «Evolution of Avian Conservation Breeding with Insights for Addressing the Current Extinction Crisis». Journal of Fish and Wildlife Management 1 (2): 189-210. doi:10.3996/062010-JFWM-017.