The Review of Economics and Statistics Vol. 63 No. 4 1981
Composition of R and D Expenditures: Relationship to Size of Firm, Concentration, and Innovative Output
Abstract
Edwin Mansfield, Composition of R and D Expenditures: Relationship to Size of Firm, Concentration, and Innovative Output, The Review of Economics and Statistics, Vol. 63, No. 4 (Nov., 1981), pp. 610-615
- DOI
- 10.2307/1935857
- Volume
- 63
- Issue
- 4
- Pages
- 610
- Sources
- openalex crossref