Title: Great Lakes transportation in the eighties /
Authors: Heilmann, Ronald L.; Mayer, Harold M. 1916-; Schenker, Eric, 1931-; Mayer, Harold M. 1916-1994.; University of Wisconsin Sea Grant Institute.
Publisher: University of Wisconsin Sea Grant Institute,
Year: 1986
Subjects: Shipping Great Lakes.; Shipping Great Lakes (North America); Great Lakes Region (North America) Economic conditions.