Home › Authors › Collier, Michael 👤 Collier, Michael b. 1950 ยท 7 books Books by Collier, Michael The melting edge 2011 Over the rivers 2008 A land in motion 1999 Water, earth, and sky 1999 Dams and rivers 1996 An introduction to the geology An introduction to the geology of Death Valley 1990 The geology of Denali National Park 1989