Unwin, Derick.
The encyclopaedia of educational media communications and technology / Derick Unwin and Ray McAleese. - London : Macmillan, c 1978. - xviii, 800 p. : ill. ; 23 cm.
322 322
0-333-18550-1
Educational technology--Dictionaries.
371.307803 / E19
The encyclopaedia of educational media communications and technology / Derick Unwin and Ray McAleese. - London : Macmillan, c 1978. - xviii, 800 p. : ill. ; 23 cm.
322 322
0-333-18550-1
Educational technology--Dictionaries.
371.307803 / E19