海量图书期刊资源，随时随地畅享阅读乐趣
A general account of Karoo vulcanicity in southern AfricaJ. W. Bristow; E. P. Saggerson · 1983
The geology and structural relationships of the southern Lebombo volcanic and intrusive rocks, South AfricaE. P. Saggerson; J. W. Bristow · 1983