Acknowledgement

¡@

1. http://www.geo.chs.nihon-u.ac.jp/tchiba/1wate/Iwate-e.html

2. http://www.geo.chs.nihon-u.ac.jp/tchiba/izu-oshima.html

3. http://village.infoweb.ne.jp/~hyamasat/karymsky/digicame.html

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