TY  - BOOK
AU  - Ulfvens,Johan
TI  - Comparative breeding ecology of the horned grebe Podiceps auritus and the great crested grebe Podiceps cristatus : archipelago versus lake habitats
T2  - Acta zoologica Fennica
SN  - 951-9481-28-1
PY  - 1988///
CY  - Helsinki
PB  - Finnish zoological publ. board
KW  - UDC
KW  - 598.44
KW  - Pygopodes. Auks. Razorbill. Guillemot. Puffin. Divers. Grebes
ER  -