Vocabulary English language 16 Problems, exercises, etc 5 Textbooks for foreign speakers 5 Study and teaching 3 College readers 2 Grammar, textbooks for foreign speakers 2 Reading (Higher education 2 Arabic language 1 Conversation 1 Dictionaries 1 English 1 Exercises, problems, etc 1 Foreign speakers 1 Foreign students 1 Glossaries, vocabularies, etc 1 Grammar 1 Japanese language 1 Multiple intelligences 1 Orthography and spelling 1 Sentences 1 Study and teaching (Secondary) 1 Text-books for foreigners 1 Usage 1 Words formation 1