First published in 1974. The demand for input-output models at the urban and regional levels is growing rapidly, as planners and government officers are becoming increasingly aware of the value and potential of the approach in subnational studies. Input-output models provide a basis for the detailed study of the economic system, emphasising clearly the interrelationships present in an economy. The present study attempts to integrate previous work aimed at the production of non-survey input-output tables at the regional level.