Acta [Seventeenth] Congressus Internationalis Ornithologici.
Berlin: Verlag der Deutschen Ornithologen-Gesellschaft, 1980. Octavo, text illustrations. Most of the articles are in English. More
Berlin: Verlag der Deutschen Ornithologen-Gesellschaft, 1980. Octavo, text illustrations. Most of the articles are in English. More