1. Some aspects of clutch-size in the Partridge (Perdix perdix);Blank;Proc. Int. Orn. Congr,1960
2. The breeding of the Kestrel, Falco tinnunculus L., in the reclaimed area Oostelijk Flevoland;Cavé;Neth. J. zool.,1968
3. Ecology of duck populations in the island group of Valassaaret, Gulf of Bothnia;Hildén;Ann. Zool. Fenn,1964
4. The determination of clutch-size in birds;Klomp;A review. Ardea,1970
5. The population ecology of the Great Tit, Parus m;Kluyver;Major L. Ardea,1951