{"_buckets": {"deposit": "dd9044c4-b85e-4137-8382-f8e6eaf634c9"}, "_deposit": {"created_by": 18, "id": "2007912", "owner": "18", "owners": [18], "owners_ext": {"displayname": "東京大学学術情報チーム", "username": "digilib"}, "pid": {"revision_id": 0, "type": "depid", "value": "2007912"}, "status": "published"}, "_oai": {"id": "oai:repository.dl.itc.u-tokyo.ac.jp:02007912", "sets": []}, "author_link": [], "co