| Subject |
|---|
| rangelands [73] |
| rational choice theory [17] |
| reciprocity [20] |
| REDD [66] |
| reforestation [32] |
| regulation [123] |
| reindeer [34] |
| remote sensing [50] |
| rent seeking [9] |
| research [82] |
| research investigation [1] |
| resilience [318] |
| resource management [978] |
| resource management--case studies [23] |
| resource management--economics [8] |
| resource management--history [11] |
| revolutionary movements [6] |
| riparian rights [24] |
| risk--research [1] |
| river basins--history [3] |