(Obafemi Awolowo University Press, 1986-05-13) Jeje, I.K
The organization of landforms into land systems on the basis of genetic factors such as lithology and formative processes like deep weathering and erosional stripping of the weathered material to form a related series of etchplains appears to constitute an important principle in a broad classification of the humid tropical terrain into mappable units; more so where such units can be shown to have associations with soil development and the other elements of the land. Such maps which can be produced from various imageries where topographic mapping at a medium scale is still unaccomplished can be very useful for development and land management purposes.