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Earth sciences & physical geography
24
Physical
24
Physique
Rn
24
Sciences de la terre & géographie physique
24
chemical
24
chimie
24
mathematical & earth Sciences
24
mathématiques & sciences de la terre
24
radon
Au
12
Belgium (Wallonia-Flanders)
12
Caledonian
12
Cambrian
12
Cenozoic
12
Geological map
12
Geological mapping
12
Hercynian
12
Lower Devonian
12
Mésozoic
12
Ordovician
12
Paleozoic
12
Stavelot-Venn Massif
12
Wallonia (Belgium)
12
gold
12
metamorphism
12
unconformity
12