Quality control Management 31 Customer services 24 Total quality management 24 Quality assurance 22 Standards 21 Computer software 18 Construction industry 15 Statistical methods 15 Consumer satisfaction 13 ISO 9000 Series Standards 13 Case studies 12 Process control 10 Electric power systems 9 Computer networks 8 Development 8 Service industries 8 Evaluation 7 Islam 7 Religious aspects 7 Banks and banking 6 Data processing 6 Design and construction 6 Drinking water 6 Manufactures 6 Manufacturing industries 6 Building 5 Civil service 5 Manufacturing processes 5 Production management 5