Grove, A. T. Land use and soil conservation on the Jos Plateau. - [Zaria, Gaskiya Corp.] 1952. - iv, 63 p. illus., plates, fold. col. map (in pocket) 26 cm. - Geological Survey of Nigeria. Bulletin ; no. 22. . LCCN: gs 52000244 Subjects--Topical Terms: Soil conservation--Nigeria. LC Class. No.: S625.N5 / G7