378.38
Eco
E
The Economics of new educational media
.--Paris : UNESCO, 1977
2  t. : tabs. ; 24 cm.-- (Educacional
methods and tecnniques ; 1)
Contiene : v. 1. present status of
research and trends. - v.  2. cost and
efectiveness
ISBN 92-3-101423-4 (t. 1).-ISBN 92-
3-101693-8(t[. 2 , )


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