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		The Economics of new educational media. Vol.2 : Cost and effectiveness. by UNESCO. Series: Educational methods and techniques ; 1Material type: Text; Literary form: Not fiction Publication details: París : UNESCO, 1980Availability: Items available for reference: Disponible (Préstamo en sala) (1) . Collection(s): UNESCO .
		The Economics of new educational media. Vol.3 : Cost and effectiveness overview and synthesis / Jean-Claude Eicher ... [et al.]. by Eicher, Jean-Claude [COAUT.] \| UNESCO. Series: Educational methods and techniques ; 1Material type: Text; Literary form: Not fiction Publication details: París : UNESCO, 1982Availability: Items available for reference: Disponible (Préstamo en sala) (1) . Collection(s): UNESCO Call number: 371.68 (100) =20 ECO Vol. 3.
		L' Économie des nouveaux moyens d'enseignement. Vol.2 : Coût et efficacité. by UNESCO. Series: Méthodes et techniques d'éducation ; 1Material type: Text; Literary form: Not fiction Publication details: París : UNESCO, 1980Availability: Items available for reference: Disponible (Préstamo en sala) (1) . Collection(s): UNESCO Call number: 371.68 (100) =40 ECO Vol. 2.
		No cover image available L' Économie des nouveaux moyens d'enseignement. Vol. 3 : Coût et efficacité : vued'ensemble et synthèse / Jean-Claude Eicher ... [et al.]. by Eicher, Jean-Claude [coaut.] \| UNESCO. Series: Méthodes et techniques d'éducation ; 1Material type: Text; Literary form: Not fiction Publication details: París : UNESCO, 1984Availability: Items available for reference: Disponible (Préstamo en sala) (1) . Collection(s): UNESCO Call number: 371.68 (100) =40 ECO Vol. 3.