Science Sciences 49 Technology 31 Research 18 History 16 Natuurwetenschappen 16 history 15 Philosophy 14 Exacte wetenschappen 13 Medicine 12 Study and teaching 11 Social aspects 10 Engineering 9 Mathematics 9 Technologie 9 Biology 7 Histoire 7 Naturwissenschaften 7 Zeitschrift 7 Data processing 6 History of Medicine 6 Natural history 6 30.00 exact sciences: general 5 E ́tude et enseignement 5 Geneeskunde 4 Publications pe ́riodiques 4 Science (General) 4 Sciences (Disciplines scientifiques) 4 Technical education 4 Aspect moral 3