TJ Mechanical engineering and machinery 2,036 TP Chemical technology 353 TA Engineering (General). Civil engineering (General) 290 TK Electrical engineering. Electronics Nuclear engineering 205 QA75 Electronic computers. Computer science 121 T Technology (General) 101 Q Science (General) 59 QC Physics 57 QD Chemistry 55 Mechanics applied to machinery. Dynamics 53 TS Manufactures 52 QA Mathematics 49 Machine design and drawing 44 TH Building construction 30 HD28 Management. Industrial Management 28 Machine construction (General) 25 QA76 Computer software 24 VM Naval architecture. Shipbuilding. Marine engineering 23 Malaysia 19 TD Environmental technology. Sanitary engineering 19 TJ1-1570 Mechanical engineering and machinery 19 HD Industries. Land use. Labor 18 QH Natural history 18 QH301 Biology 17 TH1-9745 Building construction 17 TL Motor vehicles. Aeronautics. Astronautics 17 Finite element method 15 L Education (General) 14 Mechanical and electrical engineering combined 14 Mechanical movements 14