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Supertopics:
Collapse of Civilization

Particular Collapsed Societies

Cross-References:

Subtopics:
webLaurence KnightBBC2014-10-11
webClayton Aldern, GristReader Supported News2015-09-09
webDauna CoulterNASA Science News2009-10-06
webJared DiamondNew York Review of Books2004-03-25