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1Published 1981“…Editorial Universitaria centroamericana, EDUCA,…”
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2Published [1975]“…Editorial Universitaria Centroamericana, EDUCA,…”
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3Published [1971]“…Editorial Universitaria Centroamericana (EDUCA),…”
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4Published 1974.“…Editorial Universitaria Centroamericana (EDUCA),…”
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5Published [1972]“…Editorial Universitaria Centroamericana, EDUCA,…”
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6
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7Published 1982“…Editorial Universitaria Centroamericana (EDUCA),…”
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8Published 1981.“…Editorial Universitaria Centroamericana, EDUCA,…”
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9Published 1982“…EDUCA - Editorial Universitaria Centroamericana,…”
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10Published 1979.“…Editorial Universitaria Centroamericana (EDUCA),…”
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11Published 1981“…Editorial Universitaria Centroamericana - EDUCA,…”
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12Published [1974]“…Editorial Universitaria de Guatamala, Editorial Universitaria Centroamericana (EDUCA),…”
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13Published 1979.“…Editorial Universitaria Centroamericana (EDUCA),…”
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