Autor:	Phillips, Allan R., Chambers, W. Lee, Dawson, William R., Ransom, Webster R., Pray, Russell H., Pulich, Warren M., Traylor, Melvin A., Jaeger, Edmund C., Cross, Frank C., Parkes, Kenneth C., Sutton, George Miksch, Bryant, Harold C., Fish, William R.
Zdroj:	The Condor, 1950 Mar 01. 52(2), 86-94.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/1364759 Zobrazit plný text záznamu