HD28 Management. Industrial Management 39 LB Theory and practice of education 37 L Education (General) 27 TA Engineering (General). Civil engineering (General) 24 QA75 Electronic computers. Computer science 9 HD Industries. Land use. Labor 7 NA Architecture 7 TJ Mechanical engineering and machinery 7 TK Electrical engineering. Electronics Nuclear engineering 6 QA Mathematics 5 QD Chemistry 5 BF Psychology 4 BP Islam. Bahaism. Theosophy, etc 4 LB1603 Secondary Education. High schools 4 HD1394-1394.5 Real estate management 3 HF Commerce 3 HF5549.5.M63 Employee motivation 3 LB1501 Primary Education 3 LB2300 Higher Education 3 T Technology (General) 3 HT101-395 Sociology, Urban 2 LC Special aspects of education 2 Q Science (General) 2 QA76 Computer software 2 QH Natural history 2 TD Environmental technology. Sanitary engineering 2 TH434-437 Quantity surveying 2 TP Chemical technology 2 TS Manufactures 2 Unspecified 2