TY  - BOOK
AU  - Alerstam, Thomas
TI  - Bird migration
SN  - 9780521448222
U1  - 598.2525 ALE 
PY  - 1990///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Aves (Biologia)
KW  - Birds -- Migration
KW  - Oiseaux -- Migration
N1  - Includes index
ER  -