Keegan, Desmond J. The foundations of distance education / Desmond Keegan. - London ; Dover, N.H. : Croom Helm, c1986. - 277 p. : ill. ; 23 cm. Includes bibliographies and index. ISBN: 0709915470 Subjects--Topical Terms: Distance education. Dewey Class. No.: 371.3 / KEF 1986