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Brazil's new agrarian reform : an evaluation of its property classification and tax systems
Ludwig, Armin K., (1969)
Spatial patterns of age-sex structures in Costa Rica : a study in demograph. modernization
Taylor, Harry W., (1980)
The decline in infant mortality in Costa Rica, 1950 - 1973 : modernization or technolog. diffusion?
Klijzing, F. K., (1982)