 |  | | Cambridge Scientific Abstracts |
| | | Current Contents/Agriculture, Biology & Environmental Sciences |
| | | Elsevier BIOBASE |
| | | Environmental Abstracts |
| | | Environmental Periodicals Bibliography |
| | | GEOBASE |
| | | International Bibliography of the Social Sciences |
| | | Journal of Economic Literature |
| |
| | | RePEc |
| | | Rural Development Abstracts |
| | | Rural Extension, Education & Training Abstracts |
| | | Sage Urban Studies Abstracts |
| | | Science Citation Index |
| | | Scopus |
| | | World Agricultural Economics & Rural Sociology Abstracts |
|
