%0 Journal Article
%T Composition of R and D Expenditures: Relationship to Size of Firm, Concentration, and Innovative Output
%A Mansfield, Edwin
%A ,
%J The Review of Economics and Statistics
%V 63
%N 4
%P 610
%@ 0034-6535
%D 1981-11-01
%I JSTOR
%~ DeepDyve