31335020Sub-Saharan African Middle Stone Age periodsPT2026-03-30 20:30:17UF31335021Sub-Saharan African Middle Stone Age periodNDUF31335022period, Sub-Saharan African Middle Stone AgeNDUF31335023periods, Sub-Saharan African Middle Stone AgeNDBT31312578prehistoric Sub-Saharan African periodsPTNT31363346StillbayPTNT31363347PietersburgPTNT31363348LupembanPT