| Subject |
|---|
| wastelands [6] |
| waste management [2] |
| water management [673] |
| water management--analysis [1] |
| water management--history [2] |
| water pollution [38] |
| water quality [59] |
| Water Resource & Irrigation [2018] |
| water resources [690] |
| water resources--case studies [10] |
| water resources--comparative analysis [5] |
| water resources--economics [3] |
| water resources--history [3] |
| water resources--international [2] |
| water resources--literature review [2] |
| water resources--policy [7] |
| water resources--theory [1] |
| watersheds [147] |
| watersheds--case studies [4] |
| watersheds--comparative analysis [2] |