| Eng | ||
 | International Conference on Future Groundwater Resources at Risk; 2nd; Changchun, China; 1998 |
 | Future groundwater resources at risk: proceedings of the 2nd International Conference, Changchun, China, July 1998 |
| Technical documents in hydrology; 27 |
| Publ: 2000; 312 p., illus., maps*; SC.2000/WS/50. |