Parallel variation in North and Middle American screech-owls
By: by Joe T. Marshall, Jr.
Series: Monographs of the Western Foundation of Vertebrate Zoology, no. 1
Publisher: Western Foundation of Vertebrate Zoology
Published: 1967
Place of publication: Los Angeles
Language: eng
Number of pages: 72
Subjects: Screech owls.; Birds -- Variation.
Notes: Bibliography: p. 38.