Natuurkunde Physics 30 Physique 21 33.00 physics: general 12 Zeitschrift 6 Physik 5 E ́tude et enseignement 3 Mathematical physics 3 Study and teaching 3 Toepassingen 3 Vloeistoffen 3 Chemie 2 Computermethoden 2 Data processing 2 Fluid dynamics 2 Philosophy 2 Physique mathe ́matique 2 Solids 2 Vakdidactiek 2 Vaste stoffen 2 Wiskundige methoden 2 31.81 mathematical physiscs 1 33.02 philosophy and theory of physics 1 33.04 teaching, profession and organizations of physics 1 33.06 mathematical methods of physics 1 33.60 condensed matter: general 1 33.99 physics: other 1 39.30 cosmology 1 51.30 materials testing, properties of materials: general 1 Algae 1