※一部利用できない機能があります
- National Science Foundation (U.S.) (5)
- Association of American Geographers. High School Geography Project (4)
- Bednarz, Sarah Witham (2)
- Kracht, James B. (2)
- Carswell, Ronald J. B. (1)
- Mayes, Mike (1)
- National Council for the Social Studies (1)
- Patton, Donald J. (1)
- Smalley, Keith (1)
- high school geography project of the Association of American Geographers (1)
- the National Science Foundation (1)
- the high school geography project of the Association of American Geographers (1)
- 文部省日本国内ユネスコ委員会 (1)