from the original on 5 December 1998. Retrieved 16 December 2011. Peter Turchin, Thomas D. Hall and Jonathan M. Adams, "East-West Orientation of Historical...
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1080/13600834.2020.1850174. hdl:10576/17266. ISSN 1360-0834. S2CID 229442428. Turchin, Alexey. "Multilevel Strategy for Immortality: Plan A ? Fighting Aging...
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