1. The moulting pattern of European Swallows, Hirundo rustica, wintering in the surroundings of Cape Town, South Africa;Broekhuysen;Ardea,1963
2. The breeding seasons of East African birds /
3. Some census notes on a colony of South African Cliff Swallows (Petrochelidon spilodera (Sundevall));Burgerjon;Ostrich,1964
4. Composition des bandes d'Hirondelles de Cheminée Hirundo rustica rustica L;Bont;Hivernant au Katanga et analyse de la mue des rémiges primaires. Gerfaut,1962
5. The moulting pattern of European Swallows, Hirundo rustica, wintering in eastern Zambia;Dowsett;Puku,1966