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Earth sciences & physical geography
150
Paleozoic
Physical
150
Physique
150
Sciences de la terre & géographie physique
150
chemical
150
chimie
mathematical & earth Sciences
150
mathématiques & sciences de la terre
150
Geological map
120
Belgium (Wallonia)
60
Famennian
51
Frasnian
51
Devonian limestones
48
Belgium
42
Dinant Synclinorium
42
Givetian
42
Wallonia
42
Cenozoic
33
Eifelian
30
Red marble
30
Wallonia (Belgium)
30
Carboniferous
27
Lower Devonian
27
Rn
27
Caledonian
21
Mud mounds
21
Ordovician
21
Tournaisian
21
Visean
21
mud mounds
21
Belgium (Wallonia-Flanders)
18
Mésozoic
18
Radon
18
Cretaceous
15
Dînant synclinorium
15
Hercynian
15
Mesozoic
15
Namurian
15
Pb
15
Zn
15
unconformity
15
Cambrian
12
Devonian limestone
12
geological map
12
geological mapping
12
red marble
12
Amblève
9
Amblève river
9
Belgique
9