French language -- 67 English language -- 54 Study and teaching -- 54 English 52 Study and teaching 50 Grammar 48 Chinese language -- 41 more ... Foreign relations -- 32 Audio-visual aids 31 Spanish language -- 30 Politics and government 29 Self-instruction -- 29 History 27 Textbooks for foreign speakers -- 26 German language -- 25 Self-instruction 24 Sound recordings for English speakers 24 Self-presentation 23 Foreign relations 22 Pronounciation 22 Interpersonal communication 21 Public speaking 21 Description and travel 20 Politics and government -- 20 Conversation and phrase books -- 19 Economic conditions 19 Interactive multimedia 18 Textbooks for foreign speakers 18 English speakers -- 17 English speakers 15 less ...