TP Chemical technology 32 TK Electrical engineering. Electronics Nuclear engineering 24 TJ Mechanical engineering and machinery 17 TA Engineering (General). Civil engineering (General) 15 QD Chemistry 5 TD Environmental technology. Sanitary engineering 5 TH Building construction 4 Lettuce necrotic yellows virus 3 NA Architecture 3 Subgroup 3 Biodiversity 2 GE Environmental Sciences 2 Modelling 2 Productivity 2 Q Science (General) 2 QA75 Electronic computers. Computer science 2 QA76 Computer software 2 QH Natural history 2 SB Plant culture 2 T58.5-58.64 Information technology 2 Academic performance 1 Anaerobic digestion 1 Anoxybacillus 1 Apple Disease 1 Artificial Neural Network (ANN) 1 Beef 1 Biofilm 1 Biogas 1 Bonsai container 1 CCGT 1