TP Chemical technology 117 TA Engineering (General). Civil engineering (General) 85 TJ Mechanical engineering and machinery 79 QA75 Electronic computers. Computer science 60 TK Electrical engineering. Electronics Nuclear engineering 41 QA76 Computer software 37 QD Chemistry 27 HD28 Management. Industrial Management 25 New Zealand 21 TH Building construction 19 TS Manufactures 18 QA Mathematics 14 T Technology (General) 13 Q Science (General) 12 HD Industries. Land use. Labor 10 HD1394-1394.5 Real estate management 9 Design 8 G70.212-70.215 Geographic information system 8 Sustainability 8 Tourism 7 Unspecified 7 Foucault 6 G70.39-70.6 Remote sensing 6 HF Commerce 6 Marketing 6 NA Architecture 6 Qualitative research 6 Collaboration 5 LB Theory and practice of education 5 Productivity 5