共 40 条
[11]
DUTOIT AL, 1926, DEP IRRIG UN S AFR
[12]
FLINT RF, 1968, GEOL SOC AM BULL, V79, P299, DOI 10.1130/0016-7606(1968)79[299:PSRAPI]2.0.CO
[13]
2
[16]
GROVE AT, 1958, GEOGR J, V124, P526
[17]
JONES MT, UNPUBLISHED REPORT
[18]
King L.C., 1962, MORPHOLOGY EARTH
[19]
LANGDALEBROWN I, 1963, LAND PROSPECTS NORTH
[20]
LEWIS AD, 1936, S AFR GEOGR J, V19, P22