The economics of educational media /
Wagner, Leslie, 1943-
The economics of educational media / Leslie Wagner - London : MacMillan, 1982 - x,162 p. 23 cm.
Bibliography: p152-157. - Includes index
0333316908
Audio--visual education--Economic aspects
The economics of educational media / Leslie Wagner - London : MacMillan, 1982 - x,162 p. 23 cm.
Bibliography: p152-157. - Includes index
0333316908
Audio--visual education--Economic aspects
