TY - CHAP A1 - Thomson, E. T1 - Partnerships and parenthood: A comparative view of cohabitation, marriage, and childbearing Y1 - 2005 A3 - Booth, A. A3 - Crouter, N. T2 - The new population problem: Why families in developed countries are shrinking and what it means CY - Mahwah, NJ PB - Lawrence Erlbaum ER -