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From Yakaboo:

This useful book will be a real help to the qualified teacher and specialist in German language and literature. This specially designed edition contains all the material a teacher and lecturer needs, with colourful examples and illustrations. The book is entirely in German, which will allow the teacher to switch completely from his or her native language to German. All the rules, examples, tasks and methodological material that every specialist needs are contained within the pages of this teacher's book.