(S.d.). Vessel traffic on the North Sea. Ministry of Transport, Public Works and Water Management, Directorate-General for freight transport: [s.l.]. 1 map pp.
Mapdetails
Scale: 1/1000000
GeoDatum: No information, Projection: No information Coordinates: MinLong: 0; MinLat: 51 - MaxLong: 8; MaxLat: 57 [WGS84] Depiction type: Graphical Survey date: 2000
