Opus Majus . The Opus Majus Latin for Great Work is the most important work of Roger Bacon It was written in Medieval Latin, at the request of Pope Clement IV, to explain the work that Bacon had undertaken The 840 page treatise ranges over all aspects of natural science, from grammar and logic to mathematics, physics, and philosophy
Китай,г.Яньтай,р.Фушань высокотехнологическая зона,у.Синьхай,н.188
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