Dictionaries 152 Periodicals 87 Directories 81 English language -- 76 Dictionaries -- 60 Handbooks, manuals, etc 60 Foreign relations -- 58 more ... Encyclopedias 53 Congresses 49 Civil service -- 46 Yearbook 45 Periodicals -- 44 Directories -- 43 Biography -- 42 Politics and government -- 40 Congresses -- 39 Economic conditions 38 Politics and government 38 Economic conditions -- 37 History -- 32 National security -- 27 Public administration -- 26 Malay language -- 25 Economics -- 22 Officials and employees -- 22 Security, International -- 22 World politics -- 22 English 21 International agencies -- 21 International relations -- 19 less ...