Difference between revisions of "System"
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| − | == | + | ==Useful links== |
* [https://en.wikipedia.org/wiki/System_(stratigraphy) System] | * [https://en.wikipedia.org/wiki/System_(stratigraphy) System] | ||
* [https://en.wikipedia.org/wiki/Geologic_time_scale:Terminology Geologic time scale] | * [https://en.wikipedia.org/wiki/Geologic_time_scale:Terminology Geologic time scale] | ||