Publication
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Landscape changes and the vertebrate fauna in Sweden during the last 150 years Article
Bijdragen tot de dierkunde, 31(1), 27-44.January 1961
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Usneae a R. A. Maas Geesteranus in Africa orientali et australi anno 1949 collectae Article
Persoonia - Molecular Phylogeny and Evolution of Fungi, 1(4), 415-431.January 1961
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Book notices Article
Flora Malesiana Bulletin, 16(1), 841-845.January 1961
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Expeditions and other exploration Article
Flora Malesiana Bulletin, 16(1), 801-808.January 1961
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Book reviews Article
Flora Malesiana Bulletin, 16(1), 830-840.January 1961
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Dental anomaly in Tapirus terrestris (L.) Article
Bijdragen tot de dierkunde, 31(1), 63-64.January 1961
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Die Terediniden der Sunda-Inseln und Neu-Guineas Article
Beaufortia, 9(95), 7-48.January 1961
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Ceratophyllum submersum L. in Nederland Article
Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland, 1(2), 9-12.January 1961