Cambios

A wiki format has been chosen as it will allow expansions in the long-term and create links between the content considered separately according to the themes, but interrelated. And graphic material can be included that has been discarded in each volume for reasons of space and budget.

Another new feature is that summaries of each chapter in three languages – English, French and Basque – are included alongside the full version in Spanish.

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The texts that make up this extensive work have been produced over more than thirty years, and it should therefore be born in mind that some of the data collected and here presented might seem anachronistic, particularly information contained in sections dealing with transformations. The past thirty years have given us countless innovations that have transformed our daily lives today; and conversely, some customary practices of times gone by have gradually been discontinued.