世界海溝地図掛け軸】WORLD OCEAN FLOOR MAP ナショナル ジオグラフィック協会(NGS)ワンオフ世界海溝地図 英字 1981年製造 S56年 - 世界地図,1977: World Ocean Floor Map - Marie Tharp - The University of Chicago Library,The Nippon Foundation—GEBCO Seabed 2030 Project: The Quest to See the World's Oceans Completely Mapped by 2030,Seabed Mapping,The Nippon Foundation—GEBCO Seabed 2030 Project: The Quest to See the World's Oceans Completely Mapped by 2030,