United States--Great Lakes, Lake Superior--Wisconsin, Ashland and Washburn harbors /

Bibliographic Details
Corporate Author: United States Coast Survey
Format: Government Document Map Journal
Language:English
Published: Washington, D.C. : The Survey ;
Subjects:
Description
Item Description:Depths shown by isolines and soundings.
Relief shown by contours.
"Soundings in feet."
Includes table of low water datum for Lake Superior.
Physical Description:maps : color ; 74 x 64 cm.