31335024Sub-Saharan African Second Intermediate Stone Age periodsPT2026-03-30 20:30:17UF31335025Sub-Saharan African Second Intermediate Stone Age periodNDUF31335026period, Sub-Saharan African Second Intermediate Stone AgeNDUF31335027periods, Sub-Saharan African Second Intermediate Stone AgeNDBT31312578prehistoric Sub-Saharan African periodsPTNT31363349MagosianPTNT31363350Lupembo-TshitolianPT