Depths shown by isolines and soundings. Relief shown by spot heights. "From U.S. government surveys to 1941." "Copyright 1998 by the United States Government. No copyright claimed under Title 17 U.S.C." "Soundings in meters." Includes tidal information.
OCLC:
(OCoLC)39704299
Locations:
OVUX522 -- University of Iowa Libraries (Iowa City)
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.