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

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