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A database on the distribution of butterflies (Lepidoptera) in northern Belgium (Flanders and the Brussels Capital Region)
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The inland water macro-invertebrate occurrences in Flanders, Belgium
Watervogels – Wintering waterbirds in Flanders, Belgium
GPS tracking data of Western marsh harriers breeding in Belgium and the Netherlands
Database of butterfly and moth observations in the Netherlands: research from 1947-2020
The FLORIVON flora survey in the Netherlands between 1902 and 1950