http://book.klll.cc/ebooks/author/39385.opds?sort_order=title 2025-11-16T17:44:26Z Books by Petrus, Sarnensis Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-16T17:44:26Z https://en.wikipedia.org/wiki/Peter_of_Vaux-de-Cernay See also: en.wikipedia 2025-11-16T17:44:26Z https://book.klll.cc/ebooks/38313.opds Histoire de l'hérésie des Albigeois, et de la sainte guerre entreprise contre eux de l'an 1203 à  l'an 1218 (French) Sarnensis Petrus