Autor:	Eberhardt, Robert L., Parkes, Kenneth C., Walker, Kenneth M., Hamilton, G. Dale, Frohling, Robert C., Lasky, William R., Lunk, William A., Ryder, Ronald A., Beidleman, Richard G., Jobin, L., Hock, Raymond J., Lincoln, Frederick C., Bryant, Harold C., Dollahite, Ned, Anderson,, Morris P., Marshall, David B., Alcorn, J. R., Attebery, Howard R., Miller, Alden H.
Zdroj:	The Condor, 1952 Sep 01. 54(5), 314-322.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/1364948 Zobrazit plný text záznamu