| Titel | ISBN-13 (ISBN-10) | Erscheinungsjahr |
|---|---|---|
| Total Factor Productivity of ECOWAS Rice, Cotton and Millet: Total Factor Productivity of Rice, Cotton and Millet in Economic Community of West African States : 1961-2005 | 978-3-8433-5377-9 (3-8433-5377-8) | 2010 |