[1] Univ Oxford, Sch Archaeol, Oxford OX1 2HU, England
[2] Univ Bristol, Dept Archaeol & Anthropol, Bristol BS8 1UU, Avon, England
[3] St Louis Univ Madrid, Dept Sociol & Anthropol, Madrid 28003, Spain
[4] Rice Univ, Dept Anthropol MS 20, Houston, TX 77251 USA
[5] Univ Witwatersrand, Sch Geog Archaeol & Environm Studies, ZA-2050 Johannesburg, South Africa
[6] Univ Queensland, Sch Social Sci, Brisbane, Qld 4072, Australia
[7] UCL, Inst Archaeol, London WC1H 0PY, England
[8] Kyambogo Univ, Hist Dept, Kampala, Uganda