The 2010 CIA World Factbook

Logic / Deductive and Inductive

The History of the Decline and Fall of the Roman Empire

The American Crisis

The Economist

The Seven Great Monarchies Of The Ancient Eastern World, Vol 5: Persia / The History, Geography, And Antiquities Of Chaldaea, Assyria, Babylon, Media, Persia, Parthia, And Sassanian or New Persian Empire; With Maps and Illustrations