Media type: E-Article Title: Avant-propos Contributor: de Beaulieu, Jacques-Louis Published: Consortium Erudit, 1997 Published in: Géographie physique et Quaternaire, 51 (1997) 3, Seite 351 Language: French DOI: 10.7202/033134ar ISSN: 0705-7199; 1492-143X Keywords: Paleontology ; Geology Origination: Footnote: Access State: Open Access