TY  - BOOK
AU  - Alerstam,Thomas
AU  - Christie,David A.
TI  - Bird migration
SN  - 0521328659 :
U1  - 598.2525 
PY  - 1990///
CY  - Cambridge
PB  - The University Press
KW  - Birds
KW  - Migration
N1  - Translation of: Fagelflyttning; Includes bibliographical references and index
ER  -