FORTRAN (Computer program language) 48 Data processing 38 FORTRAN IV (Computer program language) 24 Computer programming 17 Programming 16 FORTRAN 77 (Computer program language) 15 Electronic data processing 11 Electronic digital computers 9 Numerical analysis 9 Business 8 ALGOL (Computer program language) 7 Computer programs 7 Structured programming 7 COBOL (Computer program language) 6 Engineering 6 BASIC (Computer program language) 5 Programming languages (Electronic computers) 5 Linear programming 4 Mathematics 4 Computers 3 IBM 1130 (Computer) 3 Mathematical optimization 3 Problems, exercises, etc 3 Programming (Mathematics) 3 Standards 3 Statistics 3 Debugging in computer science 2 Digital computer simulation 2 FORTRAN 90 (Computer program language) 2 GPSS (Computer program language) 2