71uJo1Jj-oL._UF1000,1000_QL80_.jpg。Data Structures for 2D Representation of Terrain Models。Spatial Semantic Expression of Terrain Viewshed: A Data。。GISと関連技術を用いた地形分析の唯一の参考書。Spatial Semantic Expression of Terrain Viewshed: A Data。Title:Terrain Analysis-Principles and ApplicationsEditors: John P. Wilson, John C. GallantPublisher: John Wiley & Sons,inc.