- Author: Stanley L. Engerman Robert E. Gallman
- Language: English
- Year: 1996
- Author: Stanley L. Engerman Robert E. Gallman
- Language: English
- Year: 2000
- Author: Stanley L. Engerman Robert E. Gallman
- Language: English
- Year: 2000
- Author: Stanley L. Engerman Robert E. Gallman
- Language: English
- Year: 1996
- Author: Stanley L. Engerman Robert E. Gallman
- Language: English
- Year: 2000