Physics 306 Condensed matter physics (liquid state & solid state physics) 71 Optical physics 67 Science: general issues 62 Physical geography & topography 59 Research & information: general 50 Technology: general issues 42 History of engineering & technology 37 Particle & high-energy physics 36 Medicine 31 Biology, life sciences 24 Nuclear physics 22 Humanities 19 Social interaction 18 Laser physics 16 Slovenia 16 Quantum physics (quantum mechanics & quantum field theory) 15 Spectrum analysis, spectrochemistry, mass spectrometry 15 Electrical engineering 14 Astronomy, space & time 13 Mathematical physics 13 Education 12 Society & social sciences 11 Environmental management 10 Sociology 10 Atomic & molecular physics 9 Sustainability 9 History of science 8 Human geography 8 Mensuration & systems of measurement 8