Juvenile literature 21 Leadership 20 History 16 Management 12 Success in business 11 English language 10 Biography 8 Handbooks, manuals, etc 7 School principals 7 Islam 6 Readers 6 United States 6 Study and teaching 5 Armed Forces 4 Decision making 4 Executive ability 4 Foreign speakers 4 New business enterprises 4 Nutrition 4 Problems, exercises, etc 4 School management and organization 4 Self-actualization (Psychology) 4 Career development 3 Command of troops 3 Description and travel 3 Educational leadership 3 Fiction 3 Intelligence service 3 Interpersonal relations 3 Islamic law 3