theoretical principles of distance education/
Keegan,Desmond.
theoretical principles of distance education/ Desmond Keegan. - London: Routledge, c 1993. - ix,272p.:ill.;col. includes blbliographical references and index. 22 cm.
0-415-08942-5
--Educational technology--title--Distance education--Education--Aims and objectives
378.03 THE
theoretical principles of distance education/ Desmond Keegan. - London: Routledge, c 1993. - ix,272p.:ill.;col. includes blbliographical references and index. 22 cm.
0-415-08942-5
--Educational technology--title--Distance education--Education--Aims and objectives
378.03 THE