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Los centros de documentación pedagógica : estudio previo internacional.

Series: Estudios y documentos de educación ; 22Material type: Text Text; Literary form: Not fiction Publication details: París : UNESCO, 1955Availability: Items available for reference: Disponible (Préstamo en sala) (1) . Collection(s): UNESCO Call number: OC 058.7: 002.6: 37.001.5 (100) CEN No. 22.

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Education clearing houses and documentation centres : A preliminary international survey.

Series: Educational studies and documents ; 22.Material type: Text Text; Literary form: Not fiction Publication details: Paris : UNESCO, 1957Availability: Items available for reference: Disponible (Préstamo en sala) (1) . Collection(s): UNESCO Call number: OC 058.7: 002.6: 37.001.5 (100) =20 CEN No. 22.

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