TY  - SER
AU  - Sawyer, Donald.
TI  - Frontier Expansion and Retraction in Brazil
T2  - Latinamericanist ; 
PY  - 1982///
CY  - Florida-U.S : 
PB  - C.L.A.S, 
N1  - Contiene: Amazon Ecology and Develpoment Potential
ER  -