Autor:	Schneider, Frances B., Sprot, G. D., Sefton,, J. W., Wright, William S., Wyman, L. E., Abbott, Clinton G., Smith, Austin, Leach, Frank A., Gignoux, Claude, van Rossem, A. J., Howell, A. Brazier, Grinnell, J., Miller, Loye, Bishop, Louis B., Leopold, Aldo, Henderson, Junius, Williams, Laidlaw, Clabaugh, Ernest D., Pierce, Wright M., Sumner,, E. L.
Zdroj:	The Condor, 1927 Jan 01. 29(1), 71-82.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/1363011 Zobrazit plný text záznamu