Question: Write summary one paragraph for each article (there are 7 articles). The summary should cover all the main concept and idea in the article .
Articles: - Sources of economic growth (By Robert J. Barro t and Jong-Wha Lee)
- China's excess males, sex selective abortion, and one child policy: analysis of data from 2005 national intercensus survey (By Wei Xing Zhu, Li Lu, Therese Hesketh)
- Fertility, female labor force participation, and the demographic dividend (By David E. Bloom, David Canning, Günther Fink, Jocelyn E. Finlay)
- The Quiet Revolution That Transformed Women's Employment, Education, and Family (By CLAUDIA GOLDIN)
- Breadwinner Moms (By Wendy Wang, Kim Parker and Paul Taylor)
- MORE POWER TO THE PILL: THE IMPACT OF CONTRACEPTIVE FREEDOM ON WOMEN'S LIFE CYCLE LABOR SUPPLY (By MARTHA J. BAILEY)
- HUMAN CAPITAL: GROWTH, HISTORY, AND POLICY-A SESSION TO HONOR STANLEY ENGERMAN - Human Capital and Growth (By ROBERT J. BARRO)