メリーランド州ゲーサーズバーグ市ベクトル道路地図青水平のイラスト素材
Gaithersburg MD City Vector Road Map Blue Horizontal. All source data is in the public domain. U.S. Census Bureau Census Tiger. Used Layers: areawater, linearwater, roads. https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.html