| 1 |
Introduction to macroeconomic theory / Gerald Sirkin
Rev. ed. - Homewood, Ill. : Richard D. Irwin , 1965
|
| 2 |
Economics of transportation / D. Philip Locklin
7th ed. - Homewood, Ill. : R.D. Irwin , 1972
|
| 3 |
The American economy : principles, practices, and policies / by C. Lowell Harriss
3rd ed. - Homewood, Ill. : R.D. Irwin , 1959
|
| 4 |
Transportation : economics and public policy / [by] Dudley F. Pegrum
3rd ed. - Homewood, Ill. : R. D. Irwin , c1973
|
