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The Economics of new educational media. Vol.2 : Cost and effectiveness. by Series: Educational methods and techniques ; 1
Material type: Text Text; Literary form: Not fiction
Publication details: París : UNESCO, 1980
Availability: Items available for reference: Bib. Gregorio Torres Quintero: Disponible (Préstamo en sala) (1).

The Economics of new educational media. Vol.3 : Cost and effectiveness overview and synthesis / Jean-Claude Eicher ... [et al.]. by Series: Educational methods and techniques ; 1
Material type: Text Text; Literary form: Not fiction
Publication details: París : UNESCO, 1982
Availability: Items available for reference: Bib. Gregorio Torres Quintero: Disponible (Préstamo en sala) (1)Collection, call number: UNESCO 371.68 (100) =20 ECO Vol. 3.

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The multilateral exchange of educational audio-visual materials : existing mechanisms and suggestions for the future. Series: Educational methods and techniques ; 2
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: París : UNESCO, 1980
Availability: Items available for loan: Bib. Gregorio Torres Quintero (1)Collection, call number: Colección General LB1043 M8.4. Items available for reference: Bib. Gregorio Torres Quintero: Disponible (Préstamo en sala) (1)Collection, call number: UNESCO LB1043 M8.4.

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