[British Guiana Geological Survey] Eplanatoory note on the geological map of the Groete Greek-Lower Cuyuni-Puruni gold field, by S. Bracewell; Report on the Kartabu-Oko-Aremu section of the area between Tinamu fall and the Katuau river by S.Bracewell.
- Georgetown, Argosy, 1938.
- 4pts. in 1,, 49p.