A distributional survey of the birds of the Mexican state of Oaxaca.
Washington D C: American Ornithologists' Union, 1989. Octavo, paperback, black and white photographs. American Ornithologists' Union Monograph number 43. More
Washington D C: American Ornithologists' Union, 1989. Octavo, paperback, black and white photographs. American Ornithologists' Union Monograph number 43. More
London: Helm, 1999. Octavo, 95 maps, text illustrations., softcover. Covers over 100 sites from Baja California to the Yucatan Peninsula (where 950 species can be seen). More