F 195 - Model for the D Schedule:
Part 2 - Major periods or centuries:
Periodicals. Societies. Serials
Congresses
Sources and documents
Dictionaries
Historiography
General works
Social life and customs. Civilization. Intellectual life
Military history
Naval history
Political history
Foreign and general relations
Biography and memoirs
Collective
Individual, A-Z
[individual periods or reigns]