http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
x, 196 pages, 5 unnumbered pages of plates : illustrations ; 24 cm.
by S. Prentiss Baldwin and S. Charles Kendeigh.
Contribution number 21 from the Baldwin bird research laboratory, Gates Mills, Ohio.
Scientific publications of the Cleveland Museum of Natural History ; v. 3, no. 21