Islam 37 Customs and practices 11 History 10 Biography 7 Juvenile literature 7 Religious aspects 7 Thesis 7 Miscellanea 6 Armies 5 Economic conditions 5 Interpersonal relations 5 Juvenile fiction 5 Medals, badges, decorations, etc 5 Operations research 5 Politics and government 5 Prayer 5 Religious life 5 Social problems 5 Battles 4 Conduct of life 4 Dissertations, Academic 4 Doctrines 4 Fiction 4 Foreign relations 4 Programming (Mathematics) 4 Readers (Primary) 4 Social influence 4 Communism 3 Da'wah (Islam) 3 Drug abuse 3