Columbia subject headings:
Bibliothèque royale Albert Ier--Catalogs.
Manuscripts, French--Belgium--Catalogs.
Voltaire, 1694-1778--Manuscripts--Catalogs.
Harvard subject headings:
Bibliotheque royale Albert Ier--Catalogs.
Manuscripts, French--Belgium--Catalogs.
Voltaire, 1694-1778--Manuscripts--Catalogs.
Princeton subject headings:
Bibliothèque royale Albert Ier--Catalogs.
Voltaire, 1694-1778--Manuscripts--Catalogs.