SEROW, William J.
Structural change within the older population : economic implications / William J. Serow, David F. Sly, Michael MicklimIn: Perspectives social gerontology / Robert B. Enright (ed. lit.).- Massachusets: Allyn and Bacon, 1994.- p.33-41
GERIATRIA TERCEIRA IDADE ENVELHECIMENTO / SOC.1598