{"first_sentence": {"type": "/type/text", "value": "Since the discover by Sinn and Kaminsky in the 1980's, of a new type of catalyst called Metallocene that could polymerize olefins with specific properties, great academic and industrial efforts have been done for studying the Metallocene Catalysts and they have been constantly reviewed in the literature [1]."}, "physical_format": "Hardcover", "weight": "2 pounds", "languages": [{"key": "/l/eng"}], "type": {"key": "/type/edition"}, "publishers": ["Springer"], "number_of_pages": 472, "isbn_13": ["9781402074585"], "id": 12609883, "edition_name": "1 edition", "isbn_10": ["1402074581"], "publish_date": "August 31, 2003", "key": "/b/OL9347525M", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "title": "Emerging Fields in Sol-Gel Science and Technology", "contributions": ["Tessy Maria Lopez (Editor)", "David Avnir (Editor)", "Michel A. Aegerter (Editor)"], "subjects": ["Ceramics & glass technology", "Metals technology / metallurgy", "Powder technology", "General", "Colloids", "Science", "Technology & Industrial Arts", "Science/Mathematics", "Material Science", "Engineering - Chemical & Biochemical", "Technology / Material Science", "Ceramic materials", "Congresses"], "physical_dimensions": "9.2 x 6.5 x 1.2 inches", "revision": 1}