AT-1865
Grail Mythology
Why Ancient Inquiry uses this citation here
Bibliothèque nationale de France catalogue record for the 1967 printed dossier associated with the modern Priory of Sion genealogy; verifies a specific modern document identity and date, not the truth or medieval antiquity of its claims.
What this usage does not establish
Bibliographic verification does not by itself establish that the full text was read.
Open topic