Quality control Management 21 Customer services 17 Computer software 15 Total quality management 13 Standards 12 Consumer satisfaction 11 Quality assurance 10 Case studies 9 Electric power systems 9 ISO 9000 Series Standards 8 Islam 7 Religious aspects 7 Service industries 7 Computer networks 6 Construction industry 6 Development 6 Drinking water 6 Manufacturing industries 6 Civil service 5 Evaluation 5 Project management 5 Requirements engineering 5 Analysis 4 Banks and banking 4 Building 4 Data processing 4 Education, Higher 4 Manufactures 4 Private universities and colleges 4