Mathematics Computer science 11 Data processing 4 Problems, exercises, etc 4 Mathematical physics 3 Study and teaching (Elementary) 3 Artificial intelligence 2 Business mathematics 2 Chemistry 2 Chemistry, Physical and theoretical 2 Combinatorial analysis 2 Electrical engineering 2 Engineering mathematics 2 Mathematical analysis 2 Mathematical recreations 2 Numerical analysis 2 Pharmaceutical Preparations 2 Pharmaceutical arithmetic 2 Philosophy 2 Protective relays 2 Science 2 Study and teaching (Secondary) 2 Teaching 2 administration & dosage 2 Algebra 1 Allied health personnel 1 Biochemistry 1 Boundary layer 1 Chaotic behavior in systems 1 Computational chemistry 1