RAINS OF THE NILE BASIN:—
In 1904, by CAPT. H. G. LYONS. 25 pp., 1 map, 5 illustrations. Price,
50 milliemes.
In 1905, by CAPT. H. G. LYONS. 40 pp., 4 maps, 5 illustrations. Price,
50 milliemes.
The principles and objects of geology, with special reference to the geology of Egypt · 第 16 / 17 题