TK Electrical engineering. Electronics Nuclear engineering 47 TJ Mechanical engineering and machinery 19 TA Engineering (General). Civil engineering (General) 18 TP Chemical technology 9 T Technology (General) 7 TH Building construction 7 HD28 Management. Industrial Management 4 GE Environmental Sciences 3 QA Mathematics 3 QC Physics 3 QD Chemistry 3 Additive Manufacturing 2 HD28-70 Management. Industrial Management 2 Powder metallurgy 2 Q Science (General) 2 QA75 Electronic computers. Computer science 2 QH Natural history 2 Semantic Web 2 21st-century curriculum 1 21st-century education 1 ARCore 1 ARFoundation 1 Acceleration 1 Accelerometery 1 Adaptive 1 Additive manufacturing 1 Adhesion 1 Age, gender, ethnicity and class and boundaryless career 1 Age, gender, ethnicity and class in hospitality work 1 Artificial Intelligence 1