ผลต่างระหว่างรุ่นของ "เขตขั้วโลก"
เนื้อหาที่ลบ เนื้อหาที่เพิ่ม
Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.8 |
Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.8 |
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บรรทัด 19:
* [http://maps.grida.no/arctic/ Arctic Environmental Atlas (UNDP)] {{Webarchive|url=https://web.archive.org/web/20061230092300/http://maps.grida.no/arctic/ |date=2006-12-30 }}
* [http://www.windows.ucar.edu/polar.html Earth's Polar Regions on Windows to the Universe]
* [http://www.mnh.si.edu/arctic/index.html Arctic Studies Center, Smithsonian Institution] {{Webarchive|url=https://web.archive.org/web/20020201220454/http://www.mnh.si.edu/arctic/index.html |date=2002-02-01 }}
* [http://www.spri.cam.ac.uk/ Scott Polar Research Institute, University of Cambridge]
* [http://www.panda.org/news_facts/education/middle_school/habitats/polar_regions/index.cfm WWF:The Polar Regions]
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