TK Electrical engineering. Electronics Nuclear engineering 105 TJ Mechanical engineering and machinery 84 TP Chemical technology 59 TA Engineering (General). Civil engineering (General) 50 QA Mathematics 34 T Technology (General) 26 Q Science (General) 22 QA75 Electronic computers. Computer science 22 QC Physics 10 TH Building construction 8 QD Chemistry 6 Unspecified 6 Machine design and drawing 4 NA Architecture 4 Simulation 4 TJ1-1570 Mechanical engineering and machinery 4 Finite element method 3 HD Industries. Land use. Labor 3 Modelling 3 Neural networks (Computer science) 3 QA76 Computer software 3 TC Hydraulic engineering. Ocean engineering 3 TS Manufactures 3 Bioimpedance 2 Classification 2 Confidentiality 2 Digestion 2 EZStrobe 2 Electric apparatus and materials. Electric circuits. Electric networks 2 HD1394-1394.5 Real estate management 2