Petrus venerabilis, 1156-1956 : studies and texts commemorating the eighth centenary of his death - Kritzeck, James. (OLS)http://semarc/name/32708; Constable, Giles, <1929- >. (OLS)http://semarc/name/13287 (Herder,, 1956)
Keywords: Pietro : il Venerabile <santo>. (OLS)http://semarc/subject/12693