United States--Gulf coast, Louisiana, lakes Pontchartrain and Maurepas / United States Coast Survey.
- "LORAN-C overprinted." Depths shown by isolines and soundings. Corrected through NM Dec. 14/02, LNM Nov. 26/02. Shipping list no.: 2003-0014-S. "Soundings in feet." Includes source diagram and table of channel depths.
- U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Ocean Service, Coast Survey ;
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