Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice [ペーパーバック] Sui, Daniel、 Elwood, Sarah; Goodchild, Michael
Understanding Other-Oriented Hope: An Integral Concept Within Hope Studies (SpringerBriefs in Well-Being and Quality of Life Research) [ペーパーバック] Howell, Andrew J.; Larsen, Denise J.