Raw material adaptation and human choices according to the production methods at the beginning of the Acheulean in Europe: the example of the US4 of Bois de Riquet (France) - Bourguignon, Laurence; De Weyer, Louis; Viallet, Cyril; Ivorra, Jérôme; Cuartero, Felipe; Barsky, Deborah; Ríos Garaizar, Joseba; Bello Alonso, Patricia (2019)