| activities - actors - community places - events - ideas - imaginary landscape - physical landscape - physical processes |
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Geochronology http://wandora.org/si/temp/1492095767206-2 |
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| http://www.cidoc-crm.org/cidoc-crm/E28_Conceptual_Object, time |
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Instances (3)
| ice cores |
| radiocarbon |
| tephrachronology |
| wandora.org |