The use of willingness to pay experiments estimating demand for piped water connections in Sri Lanka
| Другие авторы: | |
|---|---|
| Формат: | |
| Язык: | English |
| Опубликовано: |
Washington, D.C.
World Bank
2006.
|
| Серии: | Policy research working paper
no.3818 |
| Предметы: |