{"physical_format": "Paperback", "subtitle": "exploration, feasibility, extraction, rock mechanics", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "publishers": ["Methuen of Australia"], "title": "An introduction to mining ", "id": 12812566, "isbn_13": ["9780454000870"], "isbn_10": ["0454000871"], "publish_date": "1978", "key": "/b/OL9516569M", "authors": [{"key": "/a/OL1968108A"}], "type": {"key": "/type/edition"}, "subjects": ["Mining", "Technology"], "revision": 1}