Report of the eighteenth session, Great Britain, 1948.
Report of the eighteenth session, Great Britain, 1948.
- London, 1950-<52 >
- v. <1-13, 15 > illus., plates, maps. 25 cm.
Includes "References."
gs 50000193
Geology--Congresses.
QE1 / .I6 1948c
Includes "References."
gs 50000193
Geology--Congresses.
QE1 / .I6 1948c