Via Ingeniería en la Red, I discovered a great collection of books online (in Spanish) about technical, historical, human aspects of Civil Engineering. These books are published by the ESTEYCO Foundation. ESTEYCO is Javier Rui-Wamba‘s consulting, one of the greatest engineers of Spain. He is the cause of spreading the post-tensioned slabs in Spain.
There are three very interesting books about Javier Manterola Armisén, Carlos Fernández Casado and Eugène Freyssinet. I meet Javier Rui-Wamba some years ago in a congress, and I’m sure some day we’ll read a book about himself 