Tacitus, Cornelius
The annals of imperial Rome
Penguin Books, 1956
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Elton, Lord
Imperial commonwealth
Collins, 1945
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Loewe, Michael
Imperial China
Frederick A. Preager, 1965
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Lavell, C.F.
Imperial England
Macmillan, 1919
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Steenbeek, Rosita
Terug in Rome
Antwerpen, 2008
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