Bird migrations
1965
Swirski, Z. |
Migratory birds
Les oiseaux du Djoudj
1983
Dupuy, André-Roger |
Suiro, P. |
Birds of the Baltic region : proceedings of the fourth Baltic Ornitological Conference
1968
Spuris, Z. D. |
Peregrine falcon populations : their biology and decline
1969
Hickey, Joseph J. |
Handbuch der Vögel Mitteleuropas
Glutz von Blotzheim, Urs N. |
Waterfowl tomorrow
1964
Linduska, Joseph L. |