Media type: E-Article Title: Urban Economies and Productivity Contributor: Baldwin, John R.; Brown, W. Mark; Rigby, David L.; Beckstead, Desmond imprint: Elsevier BV, 2007 Published in: SSRN Electronic Journal Language: English DOI: 10.2139/ssrn.1371181 ISSN: 1556-5068 Keywords: Pharmacology (medical) Origination: Footnote: