TY - JOUR T1 - STUDIES OF LATE PREHISTORIC AND MODERN OPAL PHYTOLITHS FROM COASTAL SAND DUNES AND MACHAIR IN NORTHWEST BRITAIN JO - J ARCHAEOL SCI PY - 1989/01/01 AU - POWERS AH AU - PADMORE J AU - GILBERTSON DD ED - VL - 16 IS - 1 SP - 27 EP - 45 Y2 - 2025/05/24 ER -