Study of the Legend of Holy Grail’s Knight and Emperor Friedrich II by the European House of Andechs Meranien. From the Viewpoint Their Aim for Ending of International Religious War "the Crusades" in 12-13th Century. Mediterranean Journal of Social Sciences, [S. l.], v. 4, n. 10, p. 160, 2013. Disponível em: https://www.richtmann.org/journal/index.php/mjss/article/view/1170.. Acesso em: 23 nov. 2024.