TA Engineering (General). Civil engineering (General) 205 QA75 Electronic computers. Computer science 151 HD28 Management. Industrial Management 138 TK Electrical engineering. Electronics Nuclear engineering 79 TJ Mechanical engineering and machinery 77 T Technology (General) 64 TH Building construction 57 L Education (General) 53 TP Chemical technology 50 H Social Sciences (General) 49 HD1394-1394.5 Real estate management 41 NA Architecture 40 QA Mathematics 33 HD Industries. Land use. Labor 26 BP Islam. Bahaism. Theosophy, etc 23 G70.212-70.215 Geographic information system 22 Q Science (General) 19 HF Commerce 18 QE Geology 16 LB Theory and practice of education 15 QA76 Computer software 14 QD Chemistry 14 TD Environmental technology. Sanitary engineering 13 TH434-437 Quantity surveying 11 Q Science 10 Unspecified 10 HE Transportation and Communications 9 HT101-395 Sociology, Urban 9 LB2300 Higher Education 9 HD30.213 Management information systems. Decision support systems 7