J. B. Dawson 2008. The Gregory Rift Valley and Neogene–Recent Volcanoes of Northern Tanzania. Geological Society Memoir No. 33. viii + 102 pp. London, Bath: Geological Society of London. Price £65.00, US $130.00; GSL members’ price £32.50, US $65.00; AAPG/SEPM/GSA/RAS/EFG/PESGB members’ price £39.00, US $78.00 (paperback). ISBN 978 1 86239 267 0