Antiquities, Prehistoric (2) Prehistoric peoples (2) végétation (1) goudron (1) projet (1) substance chimique (1) bâtiment (1) States (1) Tar (1) Plants (1) Plant remains (Archaeology) (1) Building (1) Boxwood (1) Birch (1) States (1) édifice (1) archéobotanique (1)