The site of Ormesson : Les Bossats (Seine-et-Marne, France) around 31 ka cal. BP / contribution of the lithic industry to the understanding of site function and occupation of the Paris Basin during the Early Gravettian - Touzé, Olivier; Bodu, Pierre; Coppe, Justin; Rots, Veerle (Presses Universitaires de Liège;, 2021)