TK Electrical engineering. Electronics Nuclear engineering 23 L Education (General) 14 QA75 Electronic computers. Computer science 14 QA76 Computer software 3 T Technology (General) 3 H Social Sciences (General) 2 HE Transportation and Communications 2 TA Engineering (General). Civil engineering (General) 2 Unspecified 2 BP Islam. Bahaism. Theosophy, etc 1 HD Industries. Land use. Labor 1 HD28 Management. Industrial Management 1 HF Commerce 1 JA Political science (General) 1 LB Theory and practice of education 1 LB2300 Higher Education 1 Q Science (General) 1 T58.6-58.62 Management information systems 1