共 70 条
- [21] GREESON RE, 1978, WETLAND FUNCTIONS VA
- [22] GREYVENSTEIN PS, 1975, EI1975 DEP AGR TECHN
- [23] GUPTA PK, 1977, FEASIBILITY UTILISAT
- [25] Heeg J, 1982, 56 S AFR NAT SCI PRO
- [26] HINDALL SM, 1975, US GEOLOGICAL SURVEY, P54
- [27] HOARE RA, 1979, PROG WATER TECHNOL, V11, P303