Mark PEARSON is the author of Opening Up the Tax Frontiers (1982), Settlement of Pastoral Nomads (1980), Genetic Interactions Between the Meiotic Drive Gene D and the Translocation T1 in the Mosquito Aedes Aegypti (L). (1978), The status of required continuing education in accounting (1972), Northowram: its history and antiquities, with a life of O. Heywood.