Publication
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A new species of Stichothamnion (Rhodophyta) from the West Indies Article
Acta botanica neerlandica, 15(3), 557-561.January 1967
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The Lindsaeoid ferns of the Old World. I. New Caledonia Article
Acta botanica neerlandica, 15(3), 562-584.January 1967
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Foliar sclereids in the Marcgraviaceae Article
Acta botanica neerlandica, 15(3), 585-623.January 1967
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The taxonomic significance of two artificially produced hybrids in the genus Campanula Article
Acta botanica neerlandica, 15(3), 624-629.January 1967
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Phytogeographical relations in the North West European heath Article
Acta botanica neerlandica, 15(3), 630-647.January 1967
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The indument of Apeiba Aubl. (Tiliaceae) Article
Acta botanica neerlandica, 15(3), 648-667.January 1967
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Some observations on the transition zone between the xerosere and the halosere on the Boschplaat (Terschelling, The Netherlands) with special attention to Centaurium vulgare Rafn Article
Acta botanica neerlandica, 15(3), 668-682.January 1967
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Cytotaxonomic studies in Cardamine pratensis L. in The Netherlands Article
Acta botanica neerlandica, 15(3), 683-689.January 1967