Industrial engineering 199 Engineering 109 Production engineering 105 Industrial and Production Engineering 97 Operating Procedures, Materials Treatment 49 Industrial management 45 Production management 37 Management 33 Operations research 33 Materials science 27 Operations Management 26 Decision making 25 Business 23 Chemical engineering 23 Sustainable development 22 Operation Research/Decision Theory 21 Business and Management 20 Engineering economy 20 Industrial Chemistry/Chemical Engineering 20 Sustainable Development 20 Engineering Economics, Organization, Logistics, Marketing 19 Machinery 19 Automatic control 18 Manufacturing industries 18 Computer science 17 Engineering design 17 Manufacturing, Machines, Tools 16 Tools 16 Engineering Design 15 Environmental Management 15