Geological map (scale 1:200,000) of the northern Ethiopian rift and its implications for the volcano-tectonic evolution of the rift.
2005. Geol. Soc. Amer. Map and Chart Series MCH094; 20 pp. text, 14 fig./phot. 1 fold. & col. geol. map 1:200,000, ca. 80x100 cm. In orig. folder, very good.
1910. Quarterly Journal of the Geological Society 66; pp. 189-252, 9 fig. 2 plts. with fossils. Includes reports on fossil plants, non-marine Mollusca and fishes. Loose extract, uncut.