Description
Published:31st ed. (Dec. 4/93).
Item Description:Depths shown by isolines and soundings.
"Soundings in feet."
Includes table of channel depths.
"Formerly C&GS 533, 1st edition, Dec. 1921 V-1921-207."
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.