{"languages": [{"key": "/l/eng"}], "physical_format": "Hardcover", "weight": "1.2 pounds", "publishers": ["Reprint Services Corp"], "number_of_pages": 102, "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "isbn_13": ["9780781291743"], "isbn_10": ["0781291747"], "publish_date": "January 1930", "key": "/b/OL11004888M", "authors": [{"key": "/a/OL955439A"}], "title": "Rational Principles Of Pianoforte Technique (Music Book Index)", "type": {"key": "/type/edition"}, "id": 14548905, "physical_dimensions": "11 x 8.5 x 0.6 inches", "revision": 1}