Publication
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A further Note on the Canines of Celebochoerus Article
Zoologische Mededelingen, 30(21), 307-308.January 1950
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Afscheidscollege Article
Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht, 97(1), 1-36.January 1950
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Malaysian plant collectors and collections being a Cyclopaedia of botanical exploration in Malaysia and a guide to the concerned literature up to the year 1950 Article
Flora Malesiana - Series 1, Spermatophyta, 1(1), 2-639.January 1950
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Introduction Article
Flora Malesiana Bulletin, 6(1), 157-158.January 1950
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State of progress in Malaysian plant taxonomy Article
Flora Malesiana Bulletin, 6(1), 159-160.January 1950
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Miscellaneous information Article
Flora Malesiana Bulletin, 7(1), 185-190.January 1950
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Personal news Article
Flora Malesiana Bulletin, 6(1), 158-159.January 1950
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Gustav Albert Stiasny Article
Zoologische Mededelingen, 30(16), 257-267.January 1950