Handbooks, manuals, etc Handbooks 37 Management 37 Handbooks, manual, etc 30 English language 25 Report writing 19 Rhetoric 18 Grammar 16 Nursing 14 Research 13 Leadership 12 Training of 12 United States 12 Diseases 11 Employees 11 Public administration 11 Drugs 10 Public speaking 10 Study and teaching 10 Mechanical engineering 9 First aid in illness and injury 8 Handbooks, manuals etc 8 Office practice in government 8 Piloting 8 Quality control 8 Clinical medicine 7 Handbook, manuals, etc 7 Law and legislation 7 Metals 7 Testing 7