TA Engineering (General). Civil engineering (General) 24 LB Theory and practice of education 22 L Education (General) 14 TP Chemical technology 13 QA Mathematics 12 TJ Mechanical engineering and machinery 12 New Zealand 9 QA75 Electronic computers. Computer science 7 T Technology (General) 7 TK Electrical engineering. Electronics Nuclear engineering 7 QC Physics 6 QD Chemistry 6 School administration and organization 6 G70.39-70.6 Remote sensing 5 H Social Sciences (General) 5 HD Industries. Land use. Labor 5 HF Commerce 5 LB1603 Secondary Education. High schools 5 BP Islam. Bahaism. Theosophy, etc 4 Factor analysis. Principal components analysis. Correspondence analysis 4 Q Science (General) 4 R Medicine (General) 4 Earnings management 3 HD1394-1394.5 Real estate management 3 HD28 Management. Industrial Management 3 HD28-70 Management. Industrial Management 3 LB2801-3095 School administration and organization 3 NA Architecture 3 Optimisation 3 Principalship 3