2. Thanks

My special thanks go to Nathalie Touze-Foltz for her invaluable cooperation. This long text on geomembranes would not have had the same quality without her knowledge, experience and judgment.

My warmest thanks to Nicolas de Walque, Daniel Fayoux and Bernat Amat for their many pertinent contributions.

I would also like to thank Bernard Breul, Bertrand Breul, Jean-Pierre Gourc, Gabriella Vaschetti and Aristide Hehner, who reviewed parts of the manuscript and provided helpful comments.

And I'd like to thank Larry Kamp, Denny Gerber, David Pelejero, Robert Wallace, Hervé Plusquellec, Daniele Cazzuffi and Francesco Fontana for providing me with useful information.

Special thanks to John Scheirs, Fred Struve and Ian Peggs for many stimulating discussions.

I've made sure...