L. W. · R. L · Robert L. · Robert W.
Harpercollins College Div · Pergamon Press
| title | media type | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|---|
| American Foreign Policy in a Changing World | Hardcover | 978-99938-806-3-9 | 1993 | Frederick H. Hartmann |
| Defending America's Security | " | 978-0-08-037444-4 | 2002 | " |
| Defending America's Security | Paperback | 978-0-08-034218-4 | 1988 | " |
| Defending America's Security | Hardcover | 978-0-08-034219-1 | 1988 | " |