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		No cover image available The Cost-effectiveness of distance education for teacher training / H. Dean Nielsen; Maria Teresa Tatto. by Dean Nielsen, H \| Totto, María Teresa, coaut. Series: BRIDGES Research Report Series ; 9.Material type: Text; Literary form: Not fiction Publication details: USA : Harvard University Institute for International Development, 1991Availability: Items available for reference: Disponible (Préstamo en sala) (1) . Collection(s): UNESCO Call number: 371.13 (548.7)(910) =20 DEA No. 9.
		In-service training of teachers in Sri Lanka / by K. D. Ariyadasa. by Ariyadasa, K. D. Series: Experiments and innovations in education ; 23Material type: Text; Literary form: Not fiction Publication details: París : Ginebra : UNESCO ; OIE, 1976Availability: Items available for reference: Disponible (Préstamo en sala) (1) . Collection(s): UNESCO Call number: 371.14 (548.7) =20 ARI No. 23.

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