Publication
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Octocorallia from North-Western Madagascar (Part II) Article
Zoologische Verhandelingen, 117(1), 1-73.January 1971
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Biological results of the snellius expedition XXIII. The genus Macrophthalmus (Crustacea, Brachyura) Article
Zoologische Verhandelingen, 115(1), 1-40.January 1971
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Plant-geography of the Pacific. As based on a census of Phanerogam Genera Article
Blumea. Supplement, 6(1), 1-222.January 1971
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Compound leaves and stipules – primitive or derived? Article
Flora Malesiana Bulletin, 25(1), 1909-1910.January 1971
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Une recherche sur le taux de chlorinité de l’eau interstitielle dans le lit de La Slack Article
Bijdragen tot de dierkunde, 41(1), 23-30.January 1971
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Notes on the fishes collected by the R.V. “TRIDENS” on the North West African shelf, 19-25 January 1969 Article
Bijdragen tot de dierkunde, 41(1), 3-9.January 1971
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On the skull of a Lynx, Lynx lynx (Linnaeus, 1758), found in the Roman castellum at Valkenburg, province of Zuid-Holland, The Netherlands Article
Bijdragen tot de dierkunde, 41(2), 130-135.January 1971
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A redescription of the South American Catfish Loricariichthys maculatus (Bloch, 1794), with designation of the lectotype and restriction of its type locality (Pisces, Siluriformes, Loricariidae) Article
Bijdragen tot de dierkunde, 41(1), 10-18.January 1971