Havighurst, R. J. (1969). Brazilian secondary education and socioeconomic development.
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Chicago-čujuhus (17. p.)
Havighurst, Robert J. Brazilian Secondary Education and Socioeconomic Development. 1969.
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MLA-čujuhus (9. p.)
Havighurst, Robert J. Brazilian Secondary Education and Socioeconomic Development. 1969.
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