TY  - BOOK
AU  - Berthold,P.(Peter),1939-
TI  - Orientation in birds
SN  - 3764326182
PY  - 1991///
CY  - Basel
PB  - Birkhauser Verlag
KW  - Birds
KW  - Orientation
KW  - Bird navigation
KW  - Migration
ER  -