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Usgs professional paper 1386–a: figure gallery 2, figure 35 Pleistocene temperature during late epoch holocene temperatures ice figure greenland age usgs high cores variations dryas younger cold year select

USGS Professional Paper 1386–A: Figure Gallery 2, Figure 35

USGS Professional Paper 1386–A: Figure Gallery 2, Figure 35

USGS Professional Paper 1386–A: Figure Gallery 2, Figure 35

USGS Professional Paper 1386–A: Figure Gallery 2, Figure 35