File talk:Earth Magnetic Field Declination from 1590 to 1990.gif
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USGS source image has moved[編集]
The old link is rotted. It redirects to a geomagnetism topic page. The gif is not on that page nor is it in any of the top-level links. I found it on this page with the actual gif file now being hosted externally at Amazon Web Services. I'm not sure which of those links (direct link to the gif file or link to the USGS page) would be most appropriate as a source. I've changed it to point to the USGS page and apologise if that's incorrect. --WarEqualsPeace (トーク) 12:32, 1 October 2020 (UTC)
