Collection
- Mobile Coverage Legacy, 1999-20092
- Polidata Presidential Results By Congressional District 1992-20082
- ReferenceUSA Business Historical Data Files1
- The Stata Journal5
- U.S. Census Population Estimates - County Level1
- Village Potential Statistics (PODES) Dataset — Indonesia2
- William J. Baumol papers1
- 조국, 1964-201012