[Los trabajos de la] Comisio n para la Correlacion delSistema Karroo (Gondwana).
Contributors: International Geological Congress, (20th : 1956 : Mexico City)
Publisher: XX Congreso Geologico Internacional
Published: 1958
Place of publication: Mexico
Language: eng
Number of pages: 256
Notes: At head of title: Congreso Geolo gico International XXa Sesio n, Ciudad de Mexico, 1956.

Spine title: Comisio n del SistemaKarroo.