| Autor | Popularidade |
| Van Zyl, Johan |
4 |
| Thirtle, Colin G., 1944- 1944- |
2 |
| World Bank Agriculture and Natural Resources Dept Office of the Director |
2 |
| World Bank Agriculture and Natural Resources Dept Sector Policy and Water Resources Division |
2 |
| Binswanger-Mkhize, Hans P., 1943-2017 1943-2017 |
1 |
| Miller, Bill R. Verfasser |
1 |
| Parker, Andrew N. Verfasser |
1 |
| Townsend, Robert M., 1948- 1948- |
1 |
