La Ruta de la Seda, el Collar de Perlas y la competición por el Índico
J. P. Nettl, “The state as a conceptual variable,” World Politics Vol. 20, No. 4 (Jul., 1968), pp. 559-592.
How Nate Silver Did It by Michael Lieberman
1942 Democratic Ideals Reality
SSRN-id1900411
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