{"isbn_13": ["9789061918714"], "physical_format": "Hardcover", "weight": "1 pounds", "languages": [{"key": "/l/eng"}], "publishers": ["Routledge"], "number_of_pages": 998, "last_modified": {"type": "/type/datetime", "value": "2008-04-30 20:50:18.033121"}, "id": 16957972, "edition_name": "1 edition", "isbn_10": ["9061918715"], "publish_date": "June 30, 1989", "key": "/b/OL12847481M", "authors": [{"key": "/a/OL4085289A"}], "title": "Rock Mech-30th Us-Gde Effcnt Utlztn", "type": {"key": "/type/edition"}, "subjects": ["Soil & rock mechanics", "Natural Resources", "Rock Mechanics", "Nature", "Science/Mathematics"], "revision": 1}