Meridian utama: Perbedaan antara revisi
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== Pranala luar ==
* {{gutenberg|no=17759|name=International Conference Held at Washington for the Purpose of Fixing a Prime Meridian}}
* [http://www.ucolick.org/~sla/leapsecs/scans-meridian.html scanned TIFFs of the conference proceedings]
* [http://wwp.greenwichmeantime.com/info/prime-meridian.htm Prime meridians in use in the 1880s, by country]
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