P. Zopf

发表

America's Older Population

P. Zopf, 1986 .

Mortality Patterns and Trends in the United States

P. Zopf, 1992 .

American Women in Poverty.

P. Zopf, A. D. Schmidely, 1990 .

Population: An introduction to social demography

P. Zopf, 1984 .

Variations in support burdens as measured by the dependency ratio

P. Zopf, 1974 .

Demography: Principles and Methods

T. L. Smith, P. Zopf, 1976 .