Arte de los metalles en qve se ensena el verdadero beneficio de los de oro, y plata por açogue. El modo de fundirlostodos, y como se ha de refinar, y apartar unos de otros. Facsimile of the original ed. of 1640.
Kommentar: The earliest work on South American ores and minerals. Information on mineral localities in Bolivia. Barba was a Catholic priest and metallurgist living in Bolivia during the period when its silver mines were most productive.There was a complete revolution in the treatment of silver ores, and Barba had knowledge of the processes. First publ. in Madrid in 1640.
