ports of Duluth-Superior, Minn. and Wis., Two Harbors, Minn., and Ashland, Wis.
Subtitle: [Part 2]
Series: Artech House ITS series -- no. 49, rev. 1961
Publisher: U.S. Govt. Print. off.
Published: 1963
Place of publication: Washington
Language: eng
Number of pages: 92
Subjects: Duluth -- Harbor; Superior, Wis. -- Harbor; Two Harbors, Minn. -- Harbor; Ashland (Wis.) -- Harbor
Notes: Part 1, covering the Great Lakes, prepared by the Maritime Administration.