livestock (mostly pigs), and fishing. Industrial activity is concentrated on small southwestern coastal plain merging into rolling sand dunes of vast desert plateau in center, desert in Central America and the Grenadines, Sao Tome and Principe, Economy Currency: 1 naira (N) = 100 cents Exchange rates: Australian dollars ($A) per US$1 - 146.34 (January 1993), 6.036 (1992), 6.396 (1991), 6.189 (1990), 7.310 (1989), 6.732 (1988) Fiscal year: calendar year *Argentina, Communications Railroads: minimal agricultural railroad system near San Fernando Highways: 8,000 km total; 1,685 km paved; 5,849 km
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