@article { AnnetteKehnelTheGreenAgesMedievalInnovationsinSustainabilityTransfromtheGermanbyGescheIpsenWalthamMABrandeisUniversityPress2024342pp45bwill, title = "Annette Kehnel, The Green Ages: Medieval Innovations in Sustainability. Trans. from the German by Gesche Ipsen. Waltham, MA: Brandeis University Press, 2024, 342 pp., 45 b/w ill.", author = "Albrecht {Classen}", year = "2025", publisher = "Peter Lang Verlag", address = "Berlin, Germany", journal = "Mediaevistik", number = "1", volume = "38", doi = "10.3726/med.2025.01.05", url = "https://www.peterlang.com/document/1673032" }