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Subclass C
Auxiliary Sciences of History (General)
Subclass CB
History of Civilization
Subclass CC
Archaeology
Subclass CD
Diplomatics. Archives. Seals
Subclass CE
Technical Chronology. Calendar
Subclass CJ
Numismatics
Subclass CN
Inscriptions. Epigraphy
Subclass CR
Heraldry
Subclass CS
Genealogy
Subclass CT
Biography