TY  - BOOK
AU  - Brush,Alan H.
AU  - Clark,George A.
ED  - American Ornithologists' Union.
TI  - Perspectives in ornithology: essays presented for the centennial of the American Ornithologists' Union 
SN  - 9780521113045
PY  - 2009///
CY  - New York
PB  - Cambridge University Press
KW  - Birds
KW  - Ornithology
N1  - Firts published 1983; Includes bibliographical references and index
ER  -