QA75 Electronic computers. Computer science TK Electrical engineering. Electronics Nuclear engineering 4 HD28 Management. Industrial Management 3 T58.5-58.64 Information technology 3 LB2300 Higher Education 2 QA76 Computer software 2 T Technology (General) 2 Computer Science and Information System (Formerly known) 1 G Geography (General) 1 H Social Sciences (General) 1 HE Transportation and Communications 1 HF Commerce 1 L Education (General) 1 LC Special aspects of education 1 NA Architecture 1 R Medicine (General) 1 TA Engineering (General). Civil engineering (General) 1 TJ Mechanical engineering and machinery 1