{"source_records": ["ia:visualopticsrefr00mich_0"], "title": "Visual optics and refraction : a clinical approach", "openlibrary": "/books/OL5199092M", "created": {"type": "/type/datetime", "value": "2017-05-16T06:43:52.144999"}, "covers": [7987816], "last_modified": {"type": "/type/datetime", "value": "2017-05-16T06:43:52.144999"}, "latest_revision": 1, "key": "/books/OL26313852M", "ocaid": "visualopticsrefr00mich_0", "works": [{"key": "/works/OL17712454W"}], "type": {"key": "/type/edition"}, "revision": 1}