Version | DOI | Comment | Publication Date |
---|---|---|---|
1 | 10.13012/B2IDB-7302959_V1 | 2023-01-16 |
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update: {"nested_updated_at"=>[nil, Mon, 30 Jan 2023 15:41:57.699664000 UTC +00:00]} | 2024-01-03T18:24:12Z |
update: {"subject"=>["", "Technology and Engineering"]} | 2023-01-30T15:41:57Z |