共 50 条
- [1] THE VEGETATION OF THE DEEP SANDY SOILS OF THE A-LAND TYPE IN THE NORTH-WESTERN ORANGE-FREE-STATE, SOUTH-AFRICA BOTANICAL BULLETIN OF ACADEMIA SINICA, 1990, 31 (03): : 235 - 243
- [4] THE PLANT-COMMUNITIES OF THE HILLS AND RIDGES IN THE NORTH-WESTERN ORANGE-FREE-STATE, SOUTH-AFRICA BOTANICAL BULLETIN OF ACADEMIA SINICA, 1990, 31 (04): : 295 - 304
- [8] SLOPE DEVELOPMENT IN THE KLERKSPRUIT VALLEY, ORANGE-FREE-STATE, SOUTH-AFRICA ZEITSCHRIFT FUR GEOMORPHOLOGIE, 1990, 34 (04): : 409 - 421