{"first_sentence": {"type": "/type/text", "value": "The skull base comprises the floors of the anterior, middle, and posterior cranial fossae."}, "physical_format": "Paperback", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "weight": "1.2 pounds", "languages": [{"key": "/l/eng"}], "publishers": ["McGraw-Hill Professional"], "number_of_pages": 334, "isbn_13": ["9780071358071"], "id": 12780068, "edition_name": "1 edition", "isbn_10": ["0071358072"], "publish_date": "December 15, 1999", "key": "/b/OL9490779M", "authors": [{"key": "/a/OL2635861A"}, {"key": "/a/OL2635862A"}, {"key": "/a/OL2635863A"}], "title": "Pocket Atlas of Emergency Medicine", "type": {"key": "/type/edition"}, "subjects": ["Accident & emergency medicine", "Reference works", "Allied Health Services - Emergency Medical Services", "Atlases", "Emergency Medicine", "Medical / Emergency Medicine", "Medical / Nursing", "Medical"], "physical_dimensions": "9.8 x 4.7 x 0.4 inches", "revision": 1}