Geospatial Technologies for All Selected Papers of the 21st AGILE Conference on Geographic Information Science - Mansourian, Ali; Mansourian, Ali; Pilesjö, Petter; Pilesjö, Petter; Harrie, Lars; Harrie, Lars; van Lammeren, Ron; van Lammeren, Ron (Springer International Publishing : Imprint: Springer, 2018)