Serbian-English dictionary   Subject Number of entries Economics 7.074 Mathematics 2.682 Microsoft 2.149 Electric motors 884 Electronics 869 Vacuum tubes 771 Thermal Energy 713 Electricity generation 697 Electrical engineering 348 Cables and cable production 316 Power system protection 286 Magnetics 284 Computer networks 280 Transformers 278 Electric machinery 271 Power lines 268 Power electronics 265 Accumulators 245 Metrology 171 Isolation 165 Patents 110 Lighting other than cinema 94 Ecology 60 Ornithology 60 Risk Management 59 Mammals 58 Ultrasound 40 Statistics 37 Printed circuit boards 37 Aviation 1 Radio 1 Geriatrics 1.347 Legislative acts 1.348 Nigeria 1.349 Total: 23.617