Portugal--North Atlantic Ocean, entrances to Porto de Lisboa and Baia de Cascais / prepared and published by the National Imagery and Mapping Agency.
Depths shown by isolines and soundings. Relief shown by contours and spot heights. "From a Portuguese chart of 2000." Shipping list no.: 2002-2003-S. "Copyright 2001 by the United States Government. No copyright claimed under Title 17 U.S.C." "Soundings in meters." Includes tidal information, source listing, and glossary.
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