Psychology 51 Mathematics 32 Chemistry 30 History 22 Mathematical statistics 21 Physics 18 Study and teaching 17 Philosophy 16 Algebra 15 Mathematical analysis 14 Probabilities 14 Biology 12 Calculus 12 Chemistry, Organic 12 Religions 12 Politics and government 10 Logic, Symbolic and mathematical 9 Psychology, Pathological 9 Computer science 8 Developmental psychology 8 Differential equations, Partial 8 English language 8 MATHEMATICS / Applied 8 Methodology 8 Quantum theory 8 Research 8 Social aspects 8 Biochemistry 6 Data processing 6 Education 6 Evaluation 6 Fluid dynamics 6 Functions of real variables 6 Grammar 6 Logic 6 MATHEMATICS / General 6 Nursing 6 Personnel management 6 Stochastic processes 6 TECHNOLOGY / Electricity 6 Algebras, Linear 4 Archaeology 4 Astronomy 4 Astrophysics 4 Atmospheric physics 4 Chemical engineering 4 Chemistry, Physical and theoretical 4 Combinatorial analysis 4 Continuum mechanics 4 Design and construction 4 Differential equations 4 Ecology 4 Educational psychology 4 Entrepreneurship 4 Environmental aspects 4 Environmental sciences 4 Finance 4 General relativity (Physics) 4 Geotechnical engineering 4 Globalization 4 Graph theory 4 Historiography 4 Human geography 4 Life sciences 4 MATHEMATICS / Calculus 4 MATHEMATICS / Functional Analysis 4 MATHEMATICS / Mathematical Analysis 4 MATHEMATICS / Probability & Statistics / General 4 Management 4 Mathematical models 4 Nuclear chemistry 4 Number theory 4 Palliative treatment 4 Person and offices 4 Political aspects 4 Practice 4 Psychological tests 4 Public administration 4 Quantum field theory 4 R (Computer program language) 4 Religion 4 SCIENCE / Energy 4 Social psychology 4 Spectrum analysis 4 Study and teaching (Higher) 4 Textbooks 4 Thermodynamics 4 Christian education 3 Experiments 3 Mental illness 3 Music 3 Psychology, Experimental 3 (Math.) 2 Accounting 2 Aerodynamics 2 Airplanes 2 Algebraic functions 2 Algorithms 2 Allied health personnel 2 Analysis 2