Research Output per year
Research Output per year
Research activity per year
Cultural and physical geography of North America, biogeography, economic geography, cartography and mapping, geographic information systems.
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
PhD, University of Iowa
… → 1967
Research output: Contribution to journal › Article › peer-review
Research output: Chapter in Book/Report/Conference proceeding › Chapter
Research output: Contribution to journal › Book/Film/Article review
Research output: Chapter in Book/Report/Conference proceeding › Chapter
Research output: Chapter in Book/Report/Conference proceeding › Chapter