The horse-flies (Diptera: Tabanidae) of the Ethiopian region : Vol. I, Haematopota and Hippocentrum / H. Oldroyd. Oldroyd, H. Horseflies. Diptera -- Ethiopia. Diptera. 595.77 OLH Includes index. London : British Museum (Natural Museum), c1952. c1952. 1952 Text ix, 216 p., [25] p. pl. : eng