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RT @biophys_nick: Check out our new paper in @bullvolc: lots on the tephra produced by @MtStHelensNVM in 1980 and Hekla in 1947 https://t.c…
RT @biophys_nick: Check out our new paper in @bullvolc: lots on the tephra produced by @MtStHelensNVM in 1980 and Hekla in 1947 https://t.c…