English in Mind 2 Teacher's Book
Puchta, Herbert / Stranks, Jeff

Let's Keep Talking
Ramsey, Gaynor

Microfiche and Chips
Fritz

B for Business
Cullen, William ua

Education
Harmes, Rick and Susan

Practice in Text Analyasis

Living English Structure
Allan, W.Stannard

We mean Business
Norman

Fachwörterbuch Datenverarbeitung
Pons

Practical English Usage
Swan, Michael