image is a derivative work of the following images: File:Yokohama_Municipal_Subway_map.png licensed with Cc-by-3.0, GFDL, GFDL-user-w 2009-02-17T18:20:48Z
ja:File:YokohamaMunicipalSubway map.png) Author Hisagi at Japanese Wikipedia Other versions Derivative works of this file: YokohamaMunicipalSubwayeng.png