TH Building construction TA Engineering (General). Civil engineering (General) 29 HD28 Management. Industrial Management 12 HD Industries. Land use. Labor 3 K Law (General) 3 NA Architecture 2 TD Environmental technology. Sanitary engineering 2 Geoinformation and Real Estate 1 H Social Sciences (General) 1 HD61 Risk Management 1 HG Finance 1 HV Social pathology. Social and public welfare 1 NC Drawing Design Illustration 1 Q Science (General) 1 QA75 Electronic computers. Computer science 1 T Technology (General) 1 TJ Mechanical engineering and machinery 1 TK Electrical engineering. Electronics Nuclear engineering 1 TT Handicrafts Arts and crafts 1