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In memoriam Dr HW van der Weele
Published in Tijdschrift voor Entomologie, in 1911, in volume 54, issue 1, pages 1-5
Created: 2010-01-11, modified: 2021-04-05
Zur Systematik der Aphiden
Published in Tijdschrift Voor Entomologie, in 1913, in volume 56, pages 69-155
Created: 2011-02-16, modified: 2011-06-21
Mimicry in Hemiptera
Published in Psyche, in 1888, in volume 5, pages 27-28
Created: 2011-06-03, modified: 2011-06-21
Nekrolog: F. M. Van der Wulp
Published in Entomologische Nachrichten, in 1900, in volume 26, pages 46-47
Created: 2017-06-15, modified: 2017-06-15