HD28 Management. Industrial Management 105 QA75 Electronic computers. Computer science 52 QA76 Computer software 29 TA Engineering (General). Civil engineering (General) 29 TK Electrical engineering. Electronics Nuclear engineering 23 HD1394-1394.5 Real estate management 15 TH Building construction 13 G70.212-70.215 Geographic information system 12 HD Industries. Land use. Labor 10 HD30.213 Management information systems. Decision support systems 8 HF Commerce 8 NA Architecture 7 TJ Mechanical engineering and machinery 6 G154.9-155.8 Travel and state. Tourism 5 H Social Sciences (General) 5 HE Transportation and Communications 5 LB Theory and practice of education 5 T Technology (General) 5 TD Environmental technology. Sanitary engineering 5 HT101-395 Sociology, Urban 4 Unspecified 4 HF5549.5.M63 Employee motivation 3 L Education (General) 3 G Geography (General) 2 HD61 Risk Management 2 HT Communities. Classes. Races 2 K Law (General) 2 LB1603 Secondary Education. High schools 2 LC Special aspects of education 2 TE Highway engineering. Roads and pavements 2