The sea base
Subtitle: relation of marine to national transportation system and of lakes-to-ocean route to continental traffic
Publisher: Great Lakes-St. Lawrence Tidewater Association
Published: 1923
Place of publication: Duluth?]
Language: eng
Number of pages: 27
Subjects: Inland navigation; Marine service; Transportation
Notes: Cover-title.

Microfilm. New York, N.Y., Columbia University Libraries, 1997. 1 microfilm reel, 35 mm.

Filmed; NEH Project (FMEST); 1997.