Publication
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The genitalia of the Dutch Aegeriidae Article
Zoologische Mededelingen, 40(12), 97-113.January 1964
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Croisement accidentel entre deux espèces de cercopithèques, Cercopithecus mona mona (Schreber) et Cercopithecus mitis doggetti Pocock Article
Zoologische Mededelingen, 39(49), 522-525.January 1964
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Annotations on the genera Triscolia, Megascolia and Scolia (Hymenoptera, Scoliidae) Article
Zoologische Mededelingen, 40(11), 89-96.January 1964
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The occurrence of Xyleborus perforans (Woll.) and X. similis in Java (Coleoptera, Scolytidae) Article
Beaufortia, 11(141), 131-142.January 1964
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The cerceris species of Java (Hymenoptera Sphecoidea) Article
Zoologische Mededelingen, 39(36), 348-368.January 1964
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Parvilux, a new genus of Myctophid fishes from the Northeastern Pacific, with two new species Article
Zoologische Mededelingen, 39(44), 445-463.January 1964
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Expeditions and other exploration Article
Flora Malesiana Bulletin, 19(1), 1113-1120.January 1964
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Periphery and archaic forms Article
Beaufortia, 11(138), 75-83.January 1964