| http://www.w3.org/ns/prov#value | - Further, a method has been proposed wherein polymerization of an olefin is conducted by means of a catalyst having one or both of the above transition metal compound and an organic aluminum compound carried on an inorganic oxide such as silica or alumina or on an organic material (Japanese Unexamined Patent Publications Nos. 101303/1989, 207303/1989, 234709/1991 and 234710/1991 and Japanese PCT Pu
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