The economics of educational media /
Wagner, Leslie, 1943-
The economics of educational media / Leslie Wagner. - London : Macmillan, 1982. - x, 162 p. ; 23cm.
Teaching aids: Audiovisual materials. Economic aspects (BNB/PRECIS)
Bibliography: p152-157. - Includes index.
0333316908
Audio-visual education--Economic aspects.
371.3033 / WAE 1982
The economics of educational media / Leslie Wagner. - London : Macmillan, 1982. - x, 162 p. ; 23cm.
Teaching aids: Audiovisual materials. Economic aspects (BNB/PRECIS)
Bibliography: p152-157. - Includes index.
0333316908
Audio-visual education--Economic aspects.
371.3033 / WAE 1982