History 109 Islam 62 Biography 52 Juvenile literature 49 World War, 1939-1945 43 Marine resources 33 Politics and government 33 Marine Corps 32 Foreign relations 31 Thesis 31 United States 28 Campaigns 25 Personal narratives, American 25 Merchant marine 23 Criticism, interpretation, etc 22 Hadith (shiites) 22 Putity, ritual 22 Management 20 Dissertations, Academic 19 Economic conditions 18 Navigation 15 Dictionaries 14 Handbooks, manuals, etc 14 Law and legislation 14 Marine engineering 14 English language 13 Leadership 13 Marine biology 13 Marines 13 Congresses 12