Please answer the following question: De re metallica (Latin for On the Nature of Metals (Minerals)) is a book cataloguing the state of the art of mining refining and smelting metals published a year posthumously in 1556 due to a delay in preparing woodcuts for the text. The author was Georg Bauer whose pen name was the Latinized Georgius Agricola. The book remained the authoritative text on mining for 180 years after its publication. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Answer:
Written Work