Wirtschaftswörterbuch 2 D/E
Eichborn, Reinhart von

Let's Get Talking
Ramsey

English in Mind 3 Teacher's Book
Puchta, Herbert / Stranks, Jeff

Britain 1982

Gesprächstraining Englisch
Seebauer/Rovina

email English
Emmerson, Paul

South Africa Since 1948
Hayward, Jean

Visual Dictionary
Merriam-Webster's

Commercial Correspondence
Ashley, A.

Testing Material
Focus on Modern Business 2