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Univariate methods for the analysis of the industrial sector in Spain
Morales, Eduardo, (1992)
The index of industrial production : a formal description of the process behind it
Gustafsson, Claes-Håkan, (1993)
A new monthly index of industrial production, 1884 - 1940
Miron, Jeffrey A., (1989)
El producto industrial de posguerra: una revision (Indices sectoriales, 1940–1958)
Morellá, Enric, (1992)