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1.
| Press Rel. Summer time or winter time? The Royal Observatory of Belgium informs (EN/FR/NL)
/ Defraigne, P. ; Bertrand, B. ; et al
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2.
| Outreach Article La correspondance d'Adolphe Quetelet
/ Langenaken, Hilde
published in Science Connection issue 56, pp. 34-36 (2018)
[OUTRART-2019-0012]
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3.
| Outreach Article De briefwisseling van Adolphe Quetelet
/ Langenaken, Hilde
published in Science Connection issue 56, pp. 34-36 (2018)
[OUTRART-2019-0011]
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4.
| Science Article (Ref.) Jean-Charles Houzeau and the 1882 Belgian Transit of Venus Expeditions
/ Sterken, C. ; Duerbeck, H. W. ; Cuypers, J. ; Langenaken, H.
published in Journal of Astronomical Data, 10 (2004)
[ASTROimport-113]
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