ผลต่างระหว่างรุ่นของ "ภูเขาไฟกรากะตัว"
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บรรทัด 51:
* [http://www.vansandick.com/familie/archief/In_het_Rijk_van_Vulcaan/10.htm#h1 "In het Rijk van Vulcaan"] – "In the Realm of the Volcano", eyewitness account by R.A. van Sandick {{nl icon}}
* [http://vulcan.wr.usgs.gov/Volcanoes/Indonesia/description_krakatau_1883_eruption.html 1883 Eruption of Krakatau] from the [[United States Geological Survey]]'s Cascades Volcano Observatory
* [http://www.geology.sdsu.edu/how_volcanoes_work/Krakatau.html Krakatau, Indonesia (1883)] {{Webarchive|url=https://web.archive.org/web/20141216203501/http://www.geology.sdsu.edu/how_volcanoes_work/Krakatau.html |date=2014-12-16 }} – information from [[San Diego State University]] about the 1883 eruption
* [http://www.npr.org/templates/story/story.php?storyId=4074651 Krakatoa Volcano: The Son Also Rises] – companion website to the NPR programme
* [http://www.scienceandsociety.co.uk/results.asp?image=10316149&wwwflag=&imagepos=8 On-line images of some of Ashcroft's sunset sketches]
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