ผู้เขียน: Alexander Gates

About the Authors Stephen M. Rowland is Professor Emeritus of Geology at the University of Nevada, Las Vegas, NV, USA. Ernest M. Duebendorfer is Professor Emeritus of Geology at Northern Arizona University, Flagstaff, AZ, USA. Alexander Gates is Distinguished Service Professor & Chair in the Department of Earth and Environmental Sciences, Rutgers University, Newark, NJ, USA.