1
Published: 1982
Superior document: Research reports / Population Studies Center, University of Michigan 82,18
2
Published: 1985
3
Published: 1981
Superior document: Research reports / Population Studies Center, University of Michigan 1981,15
4
Published: 1982
Superior document: Research reports / Population Studies Center, University of Michigan 82,17
5
Published: 1982.
Superior document: Report / Committee on Population and Demography ; no. 17
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