Description
Published:Began and ceased with 13th ed, Aug. 15, 1992.
Item Description:Depths shown by isolines and soundings.
"Soundings in feet."
Includes source diagram.
Electronic resource.
Physical Description:online resource (maps) : color
Publication Frequency:Irregular
Format:The .jpg versions of these maps require Adobe Photoshop or Adobe Acrobat 9 Pro to view.