Media type: E-Article Title: Four lectures Contributor: Jongman, Willem M. imprint: OpenEdition, 2019 Published in: L’annuaire du Collège de France Language: Not determined DOI: 10.4000/annuaire-cdf.14934 ISSN: 2109-9227; 0069-5580 Keywords: General Earth and Planetary Sciences ; General Engineering ; General Environmental Science Origination: Footnote: Access State: Open Access