TY  - BOOK
AU  - Plog,Fred
TI  - Beyond the frontier: social process and cultural change 
AV  - GF51 .B57 1966
PY  - 1967///
CY  - New York
PB  - Natural history press,  
KW  - Human geography
KW  - Beyond the frontier
N1  - Bibliography: p. [381]-400
ER  -