Geographic variation in four species of birds in Oaxaca, Mexico.
Series: Occasional papers of the Western Foundation of Vertebrate Zoology ;; no. 1
Publisher: [Western Foundation of Vertebrate Zoology]
Published: 1968
Place of publication: Los Angeles
Language: eng
Number of pages: 10
Subjects: Passeriformes -- Mexico -- Oaxaca.; Hummingbirds -- Mexico -- Oaxaca.; Birds -- Mexico -- Oaxaca.
Notes: Bibliography: p. 10.
Cover title.