Standardization of roadside counts of columbids in Puerto Rico and on Viegques Island
By: by Frank F. Rivera-Milán.
Contributors: National Biological Survey (U.S.)
Series: Resource publication ;; 197; Resource publication (National Biological Survey (U.S.)) ;; 197.
Publisher: U.S. Dept. of the Interior, National Biological Survey
Published: 1993
Place of publication: Washington, D.C
Language: eng
Number of pages: 26
Subjects: Columbidae -- Counting -- Puerto Rico.; Columbidae -- Counting -- Puerto Rico -- Vieques Island.
Notes: Includes bibliographical references (p. 24-26).