Maintenance and repair Automobiles 940 Microcomputers 336 Industrial equipment 226 Motors 213 Examinations 202 Air conditioning 178 Design and construction 172 Certification 166 Machinery 165 Equipment and supplies 160 Electronic apparatus and appliances 112 Electric equipment 109 Plant maintenance 108 Management 101 Upgrading 100 Computer technicians 96 Electric apparatus and appliances 92 Bodies 84 Electronic equipment 81 Study guides 78 Motor vehicles 76 Automobile mechanics 75 Bridges 71 Brakes 69 Testing 68 Refrigeration and refrigerating machinery 67 Electronic data processing personnel 66 Springs and suspension 62 Performance 57