birds of El Paso County, Colorado
By: by Owen A. Knorr.
Contributors: University of Colorado, Boulder.
Series: University of Colorado studies -- no. 5
Publisher: University of Colorado Press
Published: 1959
Place of publication: Boulder, Colo
Language: eng
Number of pages: 48
Subjects: Birds -- Colorado -- El Paso County
Notes: Includes bibliographical references (p. 45-47).