Handbooks, manuals, etc 133 Automobiles -- 107 Management 99 Islam 82 Data processing 77 Maintenance and repair 73 Islam -- 70 more ... Employees -- 62 Training of 47 Design and construction 45 Education -- 45 Study and teaching 45 Business -- 43 Computer programs 43 Personnel management 41 Civil service -- 40 Congresses 40 Electronics 40 English language -- 38 Problems, exercises, etc 38 Computer graphics 36 Automatic control 35 Operating systems (Computers) 35 Religious aspects -- 35 Programming 34 BASIC (Computer program language) 33 Engineering -- 33 Conduct of life 32 Production management 32 Computer networks 29 less ...