TY  - BOOK
AU  - Voous, Karel H.
AU  - Cameron, AD
TI  - Owls of the Northern Hemisphere
SN  - 978-0002194938
U1  - 598.97 
PY  - 1988///
CY  - U.K
PB  - Willian Collins
N2  - Owls of the Northern Hemisphere presents the unique collaboration of the distinguished Dutch ornithologist Karel Voous and avian artist Ad Cameron. it is the definitive source of information on the 47 known owl species occurring north of the tropics
ER  -