NDC publications and U.S. waterway data CD

Alexandria, VA U.S. Army Corps of Engineers, Water Resources Support Center, Navigation Data Center 1998 .
computer laser optical discs , Description based on v. 4. | "April 1998"--Vol. 4. 4 3/4 in. .

Dredging contracts awarded

Alexandria, VA Navigation Data Center , Description based on: FY 1993; title from caption (viewed on Feb. 21, 2007)

PUCPR Search for 'Provider:Navigation Data Center'

NDC publications and U.S. waterway data CD

Dredging contracts awarded