Demonstration program final report
By: Great Lakes and St. Lawrence Seaway Winter Navigation Board.
Publisher: The Board
Published: 1979
Place of publication: [Washington, D.C.?]
Language: eng
Number of pages: 136
Subjects: Ice navigation -- Great Lakes.; Ice navigation -- Saint Lawrence Seaway.; Great Lakes (North America) -- Navigation.; Saint Lawrence Seaway -- Navigation.
Other titles: Great Lakes and St. Lawrence Seaway Navigation season extension demonstration program
Notes: Cover title.