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Changes in the migration of human capital and the Southern "brain drain" : evidence from the censuses of 1960 and 1970
Bellante, Don, (1978)
Die Ertragsrate von Ausbildungsinvestitionen
Blaug, Mark, (1970)
Movimientos migratorios internos de Costa Rica registrados por el Censo de 1950
(1952)
Population growth and human productivity
Carvajal, Manuel J., (1976)
Economic grounds for affirmative action
Carvajal, Manuel J., (2006)
An economic analysis of migration in Costa Rica
Carvajal, Manuel J., (1974)