NIEMELÄ, Pekka; VUORISALO, Timo; ÖRMÄ, Simo. Frederick II of Hohenstaufen and modern ecology. Natural History Sciences, [S. l.], v. 8, n. 2, p. 65–74, 2021. DOI: 10.4081/nhs.2021.539. Disponível em: https://sisn.pagepress.org/nhs/article/view/539. Acesso em: 22 jul. 2024.