Media type: E-Article Title: National Concentration of High-tech Products: The Second Great Divergence? Contributor: Lu, Bing; Ju, Jiandong; Yu, Xinding imprint: Elsevier BV, 2023 Published in: SSRN Electronic Journal Language: English DOI: 10.2139/ssrn.4322109 ISSN: 1556-5068 Keywords: Pharmacology (medical) Origination: Footnote: