TY  - GEN
AU  - Gibson, Jeffry Royle.
TI  - A demographic analysis of urbanization  : : evolution of a system of cities in Honduras, El Salvador, and Costa Rica. / 
PY  - 1970///
CY  - ithaca, n.y.
PB  - Cornell University
KW  - SOCIOLOGIA URBANA
KW  - URBANIZACION
KW  - AMERICA CENTRAL
ER  -