{"first_publish_date": "1966", "created": {"type": "/type/datetime", "value": "2009-10-19T22:38:57.213057"}, "title": "Elementary cryptanalysis", "covers": [682007], "first_sentence": {"type": "/type/text", "value": "One of the earliest cryptographic systems known was used by Julius Caesar and is referred to by his name-the Caesar Cipher."}, "last_modified": {"type": "/type/datetime", "value": "2010-04-28T07:52:39.995844"}, "latest_revision": 3, "key": "/works/OL149668W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL2035347A"}}], "dewey_number": ["652.8"], "subjects": ["Ciphers", "Cryptography"], "type": {"key": "/type/work"}, "id": 34971752, "revision": 3}