1 shapefile ; 4,010,928 bytes
— Digital origin: born digital
ESRI shapefile format in a compressed file archive, containing: openwater.dbf; openwater.prj; openwater.sbn; openwater.sbx; openwater.shp; openwater.shx; openwater.shp.xml.
Source note: Open water information derived from Talbert, Richard J. A., and Roger S. Bagnall. 2000. Barrington Atlas of the Greek and Roman World. Princeton, N.J.: Princeton University Press.
Source note: Modified from the original coastline of Vmap0, a public domain product of the National Imagery and Mapping Agency and distributed by the United States Geological Survey (see http://webgis.wr.usgs.gov/globalgis/metadata_qr/metadata/airfields.htm ).