Home › Authors › George D. Ashton 👤 George D. Ashton 5 books Books by George D. Ashton River and lake ice engineering 1986 River Lake Ice Engineering 1986 Dynamics of snow and ice masses 1980 Point source bubbler systems t Point source bubbler systems to suppress ice 1979 Suppression of river ice by th Suppression of river ice by thermal effluents 1979