Westerman, A.R
Matthew's Ridge mananese mines N.W.D.: Guyana and its environment
/ by A.R. Westerman
- [Georgetown : s.n. 19--?]
- ii, 11, [84] p. : ill.
Mimeograph.
p. 104-108.
1. Manganese mines and mining - Guyana - North West District.
TN490 M3 W47