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*Agriculture: 1142 pg. 424 illustrations.
This digital version of the early volumes is the result of a partnership agreement between Labayru Fundazioa and Petronor, the oil and gas company from based in Bizkaia.
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.
