TK Electrical engineering. Electronics Nuclear engineering 444 QA75 Electronic computers. Computer science 185 HE Transportation and Communications 103 L Education (General) 101 TA Engineering (General). Civil engineering (General) 51 HD28 Management. Industrial Management 48 T Technology (General) 44 QA76 Computer software 33 LB Theory and practice of education 29 H Social Sciences (General) 23 HD Industries. Land use. Labor 22 Q Science (General) 21 TK5101-6720 Telecommunication 21 TK6570 Mobile Communication System 20 QC Physics 18 TJ Mechanical engineering and machinery 16 TH Building construction 15 Unspecified 15 NA Architecture 14 QA Mathematics 13 T58.5-58.64 Information technology 11 TK7885-7895 Computer engineer. Computer hardware 11 TP Chemical technology 11 HD1394-1394.5 Real estate management 10 PE English 10 TE Highway engineering. Roads and pavements 9 TH434-437 Quantity surveying 9 BP Islam. Bahaism. Theosophy, etc 8 HF Commerce 7 G Geography (General) 5