Conversation and phrase books Chinese language -- 7 Foreign speakers 4 Studying and teaching -- 4 Textbooks for foreign speakers 4 Audio-visual aids 3 Self-instruction 3 more ... Study and teaching -- 3 Grammar 2 Sound recordings for English speakers 2 Study and teaching for foreign speakers 2 Khmer language -- 1 Spoken Khmer 1 Studying and teaching for foreign speakers 1 less ...