HD28 Management. Industrial Management 67 HD Industries. Land use. Labor 19 TJ Mechanical engineering and machinery 12 TP Chemical technology 11 Malaysia 7 TA Engineering (General). Civil engineering (General) 7 TK Electrical engineering. Electronics Nuclear engineering 7 HD28-70 Management. Industrial Management 6 T Technology (General) 6 Construction industry 4 HF Commerce 4 Music 4 TH1-9745 Building construction 4 Travel and the state. Tourism 4 Article 3 Banking 3 Calibration 3 Economics, finance, business & management 3 Financial management. Business finance. Corporation finance 3 H Social Sciences (General) 3 HG Finance 3 Hospitality industry. Hotels, clubs, restaurants, etc. Food service 3 Humans 3 Law 3 Management 3 Publishing industry & book trade 3 QD Chemistry 3 Risk management. Risk in industry. Operational risk 3 Scanning 3 Seebeck effect 3