Hans Pichler

Werner Zeil

Universität Ulm

C. Schmitt-Riegraf

University of Münster

S.B. Kroonenberg

Anton de Kom University of Suriname

Ch. Hannss

Wolfgang Schiering

University of Mannheim

Paul Karl Hörmann

Five Continents Museum

J. Klerkx

International Bureau for Environmental Studies

Sarah Deutsch

University of Washington

Wolfgang Riedel

University of Würzburg

Essam El‐Hinnawi

National Research Centre

University of Tübingen

Technische Universität Berlin

Kiel University

Freie Universität Berlin

University of Rostock

Five Continents Museum

Université Libre de Bruxelles

University of Groningen

University of Bonn

University of Giessen