TY - GEN T1 - Mississippi River Black Hawk, Louisiana to Gulf of Mexico, mile 324 AHP to mile 23 BHP : 2003-2004 hydrographic survey / DA - [2004] CY - [Vicksburg] : CN - G1375 CN - G1375 PB - U.S. Army Corps of Engineers, PP - [Vicksburg] : PY - [2004] N1 - Depths shown by contours and soundings. N1 - Title from cover. N1 - "Prepared under the direction of the president, Mississippi River Commission ..."--P. [i]. N1 - On each map sheet: File no. H-5-55630. ID - 328759 KW - Hydrography TI - Mississippi River Black Hawk, Louisiana to Gulf of Mexico, mile 324 AHP to mile 23 BHP : 2003-2004 hydrographic survey / ER -