Speciation and geographic variation in Black-tailed Gnatcatchers.
Chicago: American Ornithologists' Union, 1987. Octavo, black and white photographs, maps, wrappers. American Ornithologists' Union Monograph number 42. More
Chicago: American Ornithologists' Union, 1987. Octavo, black and white photographs, maps, wrappers. American Ornithologists' Union Monograph number 42. More
Princeton NJ: Princeton University Press, 1987. Octavo, text illustrations, very good copy in dustwrapper. More
Sydney: AOU, Ornithological Monographs No. 13,1973. Quarto, wrappers, illsustrations. More
New Haven: Yale University Press, 1996. Quarto, illustrations, signature, very good copy in slightly torn dustwrapper. A profusely illustrated discussion of the origin of birds and of avian flight. "This is the most comprehensive available account of the origin and the inferred relationship of the known living and fossil kinds..... More
Champaign: University of Illinois Press, 1952. Octavo, wrappers, text illustrations. Illinois Biological Monographs, volume 23, numbers 1-3. More
New Haven: Yale University Press, 1990. Quarto, very good copy in dustwrapper. "This is by far the most important recent publication on avian classification … A monumental work, superbly organized and presented." D. W. Snow, Biologist. More
Oxford: Oxford University Press, 1998. Octavo, illustrations, publisher's navy blue cloth, a fine copy. More