TY  - BOOK
AU  - Undwin, Derick (Ed.)
AU  - McAleese, Rav (Ed.)
AU  - Morton, Richard (Ed.)
TI  - The Encyclopaedia of educational media communication and technology
SN  - 0-333-18550-1
U1  - 371.3078 21st
PY  - 1978///
CY  - London
PB  - McMillan
KW  - Educational technology-United States-Encyclopedias; Ccommunication in education- Encyclopedias-United States; United States-Communication and technology-Encyclopedias
ER  -