1
Williams, William Klapp
| Project Gutenberg |
2012
E-Book
4
Norman, Emma S.
| Norman, Emma S. |
2015
E-Book
5
Yergin, Daniel
| Penguin |
2012
대출가능
6
Boehmer, Elleke
| Oxford University Press |
2002
보존자료
7
American Enterprise Institute for Public Policy R
| American Enterprise Institute for Public Policy R |
1977
제적(폐기)