L Education (General) 15 LB Theory and practice of education 13 TK Electrical engineering. Electronics Nuclear engineering 9 TP Chemical technology 8 QA75 Electronic computers. Computer science 7 TA Engineering (General). Civil engineering (General) 7 HD28 Management. Industrial Management 5 HT101-395 Sociology, Urban 4 NA Architecture 4 TJ Mechanical engineering and machinery 4 BP Islam. Bahaism. Theosophy, etc 3 T Technology (General) 3 HD Industries. Land use. Labor 2 HD1394-1394.5 Real estate management 2 LB1603 Secondary Education. High schools 2 LC Special aspects of education 2 QA Mathematics 2 QD Chemistry 2 TH Building construction 2 TH434-437 Quantity surveying 2 TS Manufactures 2 G70.212-70.215 Geographic information system 1 GB Physical geography 1 HD30.2 Knowledge management 1 LB2300 Higher Education 1 LC5201 Education extension. Adult education. Continuing education 1 NB Sculpture 1 PE English 1 Q Science (General) 1 QC Physics 1