TY  - GEN
AU  - Bracewell, Smith
ED  - British Guiana
TI  - Report on the preliminary geological survey of the Potaro-Ireng district of British Guiana, April-December, 1926
U1  - Pam 558.81 
PY  - 1958///
CY  - Georgetown
PB  - Geological Survey Department
N1  - Bibliography : p. 55-59
ER  -