Interchange Level 1B
Student's Book with Online Self-Study
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Touchstone, together with Viewpoint, is a six-level English program based on research from the Cambridge English Corpus.Authors: Jack C. Richards, with Jonathan Hull, with Susan Proctor, Michael McCarthy, Jeanne McCarten, Helen SandifordEnglish Type: American EnglishCEF Level: A1 - B1Publication date: February 2016
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