TY - BOOK AU - Hover,David TI - Think twice: communication activities for beginner to intermediate students SN - 0521273854 U1 - 428.34 22 PY - 1986///. CY - Cambridge: PB - Cambridge University Press, KW - English language KW - Textbooks for foreign speakers KW - Αγγλική γλώσσα KW - Διδακτικά βιβλία για ξένους N1 - -- V. 1. Student's book -- V. 2. Teacher's book ER -