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Age Determination of American Kestrels: A Revised Key (Clave revisada para determinar la edad en Falco sparverius)
John A. SmallwoodVolume:
60
Language:
english
Journal:
Journal of Field Ornithology
DOI:
10.2307/4513474
Date:
January, 1989
File:
PDF, 463 KB
english, 1989