1. Institute of Historical Geology and Palaeontology, University of Copenhagen
2. Department of Geology, King's College, Strand, London
3. Department of Environmental Sciences, Plymouth Polytechnic
4. Department of Geology, University College London
5. Universite de Neuchlitel, Institui de Geologie
6. Faculte Polytechnique, Rue de Houdai
7. Niedersiichsisches Landesamt fiir Bodenforschung
8. GGU