[1] ( 版) http://www.ic.daito.ac.jp/~mizutani/gps/data/2013_aug26_toyara.gpx

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[2] ( 版) http://www.ic.daito.ac.jp/~mizutani/gps/data/2013_aug26_toyara.gpx

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[3] 2014InfB23 wikirapport for studietur til Island Marcus og Samuel og Mathias - rtgkom.dk ( 版) http://rtgkom.dk/wiki/2014InfB23_wikirapport_for_studietur_til_Island_Marcus_og_Samuel_og_Mathias

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