Published by:
Wirtschaftsministerium Baden-Württemberg 
(Ministry of Economics of Baden-Württemberg)
Theodor-Heuss-Straße 4
D-70174 Stuttgart

in association with the

Amt für Umweltschutz
(Office of Environmental Protection)
Gaisburgstr. 4
70182 Stuttgart

Contents:
Prof. Dr. Jürgen Baumüller, Stuttgart
Dipl. Met. Ulrich Hoffmann, Stuttgart
Dr. Ulrich Reuter, Stuttgart

Technical work:
Photos by: Prof. Dr. J. Baumüller, Stuttgart
Web layout by: Erich Kohfink, Stuttgart
Translation by: Melanie Vogt, Berglen