1. Les sociétés et les familles des poissons;Baerends;Colloq. Intern. Rech. Scient.,1952
2. Introduction to the ecology of the Arima Valley, Trinidad;Beebe;B.W.I. Zoologica,1952
3. The effect of raptors on Prairie Chickens on booming grounds;Berger;J. Wildl. Mgmt.,1963
4. Fortplantingsbeteenden inom hönsfågelfamiljen Tetraonidae;Hjorth;Vår Fågelvärld,1967