Islam 97 Congresses 86 Handbooks, manuals, etc 72 History 62 Food 45 Design and construction 35 Metals 35 Analysis 32 Management 32 Religious aspects 32 Data processing 31 Testing 31 Materials 30 Measurement 30 Operations research 28 Biography 25 Dictionaries 25 Mathematical models 25 Statistical methods 23 Success 23 Malaysia 22 Corrosion and anti-corrosives 20 Leadership 20 Vibration 20 Computer graphics 19 Industrial management 19 Airplanes 18 Business 17 Microbiology 17 Nutrition 17