ISBNs beginnend mit 978-3-7623-xxxx-xJosef Thayer × English for EducatorsTexts and Exercises for Classwork and Comprehension TestsJosef ThayerBardtenschlagerSoftcover1981 English for EducatorsTexts and Exercises for Classwork and Comprehension Tests / ArbeitsbuchJosef ThayerBardtenschlagerSoftcover1978