BASIC (Computer program language) 5 Computers 2 Computers and civilization 2 Electronic data processing 2 Human physiology 2 Metabolism 2 Nutrition 2 Structured programming 2 Astronomy 1 COBOL (Computer program language) 1 Chemistry 1 Climate 1 Climatology 1 Control theory 1 Electronic digital computers 1 FORTRAN (Computer program language) 1 Mathematical models 1 Mathematics 1 Microbiology 1 PL/C (Computer program language) 1 PL/I (Computer program language) 1 Simulation methods 1 Statistics 1 Study and teaching (Secondary) 1 Weather 1