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1、Protracted GreatPower WarA Preliminary Assessment Andrew F.Krepinevich Jr.FEBRUARY 2020。

2、 https:crsreports.congress.gov February 5, 2020Federal Securities Laws: An OverviewSecurities Act of 1933 The Securities。

3、 Wage Inequality and the Stagnation of Earnings of LowWage Workers: Contributing Factors and Policy Options Jane G. Grav。

4、 Federal Spending on Benefits and Services for People with Low Income: FY2008FY2018 Update Karen E. Lynch Specialist in 。

5、 Oil Market Effects from U.S. Economic Sanctions: Iran, Russia, Venezuela Phillip Brown Specialist in Energy Policy Febr。