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CHILD IMMUNIZATION IN VIETNAM: SITUATION AND BARRIERS TO COVERAGE.
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- Journal of Biosocial Science, 2007, v. 39, n. 1, p. 41, doi. 10.1017/S0021932006001234
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- Article
Vouchers for Private Schooling in Colombia: Evidence from a Randomized Natural Experiment.
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- American Economic Review, 2002, v. 92, n. 5, p. 1535, doi. 10.1257/000282802762024629
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- Article