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Wendell Duffield
Wendell Duffield received a PhD in geology from Stanford University in 1967. Ruing the following four decades, he studied volcanoes around the world as an employee of the U.S. Geol...view moreWendell Duffield received a PhD in geology from Stanford University in 1967. Ruing the following four decades, he studied volcanoes around the world as an employee of the U.S. Geological Survey. Also the author of Chasing Lava, Duff and his wife live in Flagstaff, Arizona.view less