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Edwards, RL, Beck, JW, Burr, GS, Donahue, DJ, Chappell, JMA. Bloom, AL, Druffel, ERM., Taylor, FW. 1993. A large drop in atmospheric 14C/ 12C and reduced melting in the Younger Dryas, documented with 230Th ages of corals. Science 260: 962-968.


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