Catalog Record: Survey study for Great Lakes-St. Lawrence Seaway navigation season extension : preliminary draft | HathiTrust Digital Library

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Survey study for Great Lakes-St. Lawrence Seaway navigation season extension :
preliminary draft.

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Language(s): English
Published: Detroit, Mich. : U.S. Army Engineer District, Detroit, Corps of Engineers, 1978.
Subjects: Ice navigation > Ice navigation / Saint Lawrence Seaway.
Ice navigation > Ice navigation / Great Lakes (North America)
Great Lakes (North America) > Great Lakes (North America) / Commerce.
Saint Lawrence Seaway > Saint Lawrence Seaway / Commerce.
Note: "July 1978"
Physical Description: 2 v. : ill., maps ; 27 cm.
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