Sprout, H., & Sprout, M. (1965). The ecological perspective on human affairs: With special reference to international politics. Princeton: Princeton University Press.
Παραπομπή Chicago StyleSprout, Harold, and Margaret Sprout. The Ecological Perspective On Human Affairs: With Special Reference to International Politics. Princeton: Princeton University Press, 1965.
Παραπομπή MLASprout, Harold, and Margaret Sprout. The Ecological Perspective On Human Affairs: With Special Reference to International Politics. Princeton: Princeton University Press, 1965.
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