Standards 690 Music 161 Design and construction 110 Popular music 88 Data processing 75 Electric cables 74 Testing 66 Automobiles 62 History and criticism 60 Management 56 Folk music 50 Rock music 49 Wireless communication systems 48 Pipe fittings 46 Research 46 Automatic control 42 Electric wiring 42 Musical instruments 41 Buildings 40 Household appliances, Electric 40 Tiles 40 Digital techniques 38 Lighting 38 Electric power systems 36 Electromagnetic compatibility 36 Social aspects 36 Ceramics 34 Computer sound processing 34 Instruction and study 33 Image processing 32