If you are a user of one of our bilingual geography textbooks, you will find the supplements on the following page

 

www.diercke.com/books

 

Instead of using a webcode in the site search, you have to choose your textbook.

In the following step you'll find a list of the pages with additional material. 

 

 

 

When you click on one of the pages, you'll find the material, e.g. audio files: