TY  - BOOK
AU  - Keegan,Desmond
TI  - Theoretical principles of distance education
SN  - 0415089425
AV  - LC5800 .T46 1993
PY  - 1993///
CY  - London, New York
PB  - Routledge
KW  - Distance education
KW  - Education
KW  - Aims and objectives
KW  - Educational technology
N1  - Includes bibliographical references and index
ER  -