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ckan_admin 建立了数据集David Rumsey Historical Map Collection: A TimeMap Search Interface 10年前

David Rumsey Historical Map Collection: A TimeMap Search Interface

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ECAI Clearinghouse

In the 1990's ECAI developed the ECAI Metadata Clearinghouse, a system for managing and cataloging spatio-temporal cultural data. ECAI's Metadata Clearinghouse includes records... 读取更多

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