L'essor de l'Europe : 11.-13. siècles - Halphen, Louis. (OLS)http://semarc/name/11003 (Peuples et civilisations)
Keywords: Storia medievale - Sec. 11. (OLS)http://semarc/subject/6007; Storia medievale - Sec. 12. (OLS)http://semarc/subject/6309; Storia medievale - Sec. 13. (OLS)http://semarc/subject/6310