1.
Atkinson-Willes GL. The mid-winter distribution of wildfowl in Europe, northern Africa and south-west Asia, 1967 and 1968. Wildfowl [Internet]. 1969 Nov. 1 [cited 2026 Jun. 10];20:98-111. Available from: https://tidsskrift.dk/Wildfowl/article/view/155558