Dictionaries 154 Periodicals 90 Directories 81 English language -- 77 Foreign relations -- 71 Dictionaries -- 63 Handbooks, manuals, etc 60 more ... Encyclopedias 53 Congresses 49 Civil service -- 46 Yearbook 45 Periodicals -- 44 Biography -- 43 Directories -- 43 Economic conditions 40 Politics and government -- 40 Congresses -- 39 Economic conditions -- 38 Politics and government 38 History -- 32 National security -- 27 Public administration -- 26 Malay language -- 25 Economics -- 23 English 22 Officials and employees -- 22 Security, International -- 22 World politics -- 22 International agencies -- 21 International relations -- 19 less ...