Pullan, R. A. The soils, soil landscapes and geomorphological evolution of a metasedimentary area in northern Nigeria/ by R. A. Pullan - Liverpool: University of Liverpool, 1970 - 1, 144 p.: illus., maps.; 24 cm. Bibliography: p. 130-134. ISBN: 0902795015 Subjects--Topical Terms: Soils--NigeriaGeomorphology--Nigeria