L Education (General) 26 HD28 Management. Industrial Management 22 TA Engineering (General). Civil engineering (General) 21 TK Electrical engineering. Electronics Nuclear engineering 21 LB Theory and practice of education 15 TJ Mechanical engineering and machinery 11 H Social Sciences (General) 10 QA75 Electronic computers. Computer science 10 TP Chemical technology 9 T Technology (General) 8 HD Industries. Land use. Labor 7 LB1603 Secondary Education. High schools 5 Q Science (General) 5 BF Psychology 4 G Geography (General) 4 HT101-395 Sociology, Urban 4 NA Architecture 4 QD Chemistry 4 QC Physics 3 GE Environmental Sciences 2 HD1394-1394.5 Real estate management 2 HF Commerce 2 LB2300 Higher Education 2 QA76 Computer software 2 TH Building construction 2 TH434-437 Quantity surveying 2 BL Religion 1 BP Islam. Bahaism. Theosophy, etc 1 Computer Science and Information System (Formerly known) 1 G70.212-70.215 Geographic information system 1