Dictionary of New English 1963-1972
Barnhart

Britain. A short introduction
Bourke

How to teach writing
Harmer, Jeremy

Objective PET for Schools
Hashemi, Louise

Visual Dictionary
Corbeil/Mouser

English Verbs and Tenses
Bourke, Kenna

English Vocabulary in Use
McCarthy, Michael u.a.

Focus on Modern Business 1 Extra Pr

Business Builders 4, 5, 6
Emmerson, Paul

Communication for Business Lehrbuch
Abegg, Birgit