Declining Scaup Populations: Issues, Hypotheses, and Research Needs

Autor:	Austin, Jane E., Afton, Alan D., Anderson, Michael G., Clark, Robert G., Custer, Christine M., Lawrence, Jeffrey S., Ringelman, James K.
Zdroj:	Wildlife Society Bulletin (1973-2006), 2000 Apr 01. 28(1), 254-263.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/4617308 Zobrazit plný text záznamu Plný text