Los cálculos del producto nacional en los siglos XIX y XX y su utilizacion en la historia economica

After pointing out the problems involving the making of historic time series of economic aggregates, the main estimates of Spanish national income are described, indicating shortcomings and disparities. Prof. Prados de la Escosura's work is thoroughly analyzed. Taking into account two more recent works on national income in contemporary Spain, the author stresses the need both to contrast data, methods and findings in any attempt to quantify the past, and to establish checks on the validity of these data.