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Sep 8: Helmholtz's ICE AND GLACIERS

When Europe Lay Under Ice

There was a time when the snow fell and did not melt in summer.
Then from the frozen north there descended huge masses
of ice that covered northern Europe and most of North America.
Glaciers reveal a new world to us.

Read from Helmholtz's ICE AND GLACIERS ......     Vol. 30, pp. 211-223