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Mary Hill

Mary Hill is the author of Geology of the Sierra Nevada (1975) and California Landscape: Origin and Evolution (1984), both available in paperback from the University of California Press. She is coauthor of Volcanic Eruptions of 1980 at Mount St. Helens: The First 100 Days (1982). Longtime editor of the magazine California Geology , she was later Western Region Information Officer for the U.S. Geological Survey and Adjunct Professor of Geosciences at San Francisco State University.