Pronunciation English language -- 21 German language -- 16 Study and teaching 14 Chinese language -- 13 English 10 Grammar 8 more ... Readers 7 Conversation and phrase books -- 6 English language 6 Studying and teaching for foreign speakers 6 Chinese Language -- 5 Glossaries, vocabularies, etc 5 Textbooks for foreign speakers -- 5 Dictionaries -- 4 German language 4 Grammar -- 4 Textbooks for foreigners 4 Problems, exercises, etc 3 Spoken English 3 Spoken German 3 Conversation 2 Educational games 2 Textbooks for foreign speakers 2 Chinese 1 Composition and exercises 1 Conversation and phrase books 1 Japanese language -- 1 Juvenile literature 1 Listening 1 less ...