{"first_sentence": {"type": "/type/text", "value": "Measuring productive efficiency of firms or enterprises and analyzing their policy implications have been a central topic of research in microeconomic theory."}, "physical_format": "Hardcover", "subtitle": "With Applications of Data Envelopment Analysis", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "weight": "13.9 ounces", "languages": [{"key": "/l/eng"}], "publishers": ["Springer"], "number_of_pages": 192, "isbn_13": ["9783540140139"], "id": 12252333, "edition_name": "1 edition", "isbn_10": ["3540140131"], "publish_date": "August 13, 2003", "key": "/b/OL9054129M", "authors": [{"key": "/a/OL2955117A"}], "title": "New Efficiency Theory", "type": {"key": "/type/edition"}, "subjects": ["Production & quality control management", "Industrial efficiency", "Data envelopment analysis", "Computers", "Business / Economics / Finance", "Computer Books: General", "Industries - General", "Econometrics", "Operations Research", "Business & Economics / Industries", "Business & Economics / Operations Research", "Business & Economics-Econometrics", "Business & Economics-Operations Research", "General", "Effici\u00e8entie.", "gtt"], "physical_dimensions": "9.4 x 5.9 x 0.4 inches", "revision": 1}