MAP20100087817 Wolff, Edward N. Productivity growth, capital intensity, and skill levels, in the U. S. insurance industry, 1948-86 / Edward N. Wolff En: Geneva papers on risk and insurance : issues and practice. - Geneva : The Geneva Association, 1976- = ISSN 1018-5895. - 01/04/1991 Tomo 16 Número 2 - 1991