Handbooks, manuals, etc 133 Automobiles -- 105 Management 96 Islam 79 Data processing 76 Maintenance and repair 71 Islam -- 65 more ... Employees -- 62 Training of 47 Design and construction 44 Education -- 44 Study and teaching 44 Computer programs 43 Business -- 42 Congresses 40 Electronics 40 Personnel management 40 Problems, exercises, etc 38 English language -- 37 Computer graphics 36 Automatic control 35 Operating systems (Computers) 35 Religious aspects -- 34 BASIC (Computer program language) 33 Engineering -- 33 Programming 33 Civil service -- 31 Conduct of life 31 Production management 31 Computer networks 29 less ...