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Imperialism as a level of analysis in correlates-of-war research
Köhler, Gernot, (1975)
K voprosu o japonskoj agressii v Koree i pričinach japono-kitajskoj vojny 1894-1895 gg
Naročnickij, A., (1950)
On war and greed in the second century B. C.
Harris, W. V., (1971)