Political science 9 Algebra 5 Computer 5 Chemistry, Physical and theoretical 4 Mathematical analysis 4 Algebra, Abstract 3 Biochemistry 3 C++ (Computer program language) 3 Chemistry 3 Chemistry, Organic 3 Compilers (Computer programs) 3 Linear programming 3 Metallurgy 3 Quantum theory 3 Abstract algebra-- Mathematics 2 Analytic functions 2 Biochemistry-- Biology 2 Biology 2 Cell division 2 Chemistry, Analytic 2 Differential equations 2 Ecology 2 Education 2 Graph theory 2 Logic 2 Mathematics 2 Microteaching 2 Number theory 2 Partitions (Mathematics) 2 Probability and Statistics 2