TY  - BOOK
AU  - Järvinen,Olli
AU  - Väisänen,Risto A.
TI  - Species diversity of Finnish birds. II: biotopes at the transition between taiga and tundra
T2  - Acta Zoologica Fennica
SN  - 951-661-015-3
PY  - 1976///
CY  - Helsinki
PB  - Societas pro Fauna et Flora Fennica
ER  -