The Cost-effectiveness of distance education for teacher training /

Dean Nielsen, H.

The Cost-effectiveness of distance education for teacher training / H. Dean Nielsen; Maria Teresa Tatto. - USA : Harvard University Institute for International Development, 1991. - iii, 32 p. ; il., fot. - BRIDGES Research Report Series ; 9. .

371.13 (548.7) (910)=20 DEA No.9.