Author/Editor		Olson, Storrs L.; Feduccia, John Alan
Title		Presbyornis and the origin of the Anseriformes (Aves: Charadriomorphae)
Type		monografija
Place		Washington
Publisher		Smithsonian institution press
Publication year		1980
Volume		str. III, 24 str.
Language		eng
Descriptors		Anseriformes Presbyornis Birds Evolution Evolution Evolution