Research into distance education = =Fernlehre und Fernlehrforschung / ed. Borje Holmberg, Gerhard E. Ortner
Secondary AuthorHolmberg, Borje Ortner, Gerhard E.CountryAlemanha.PublicationFrankfurt am Main : Peter Lang, cop. 1991Description224 p. ;
21 cmISBN3-631-44270-X CDU37.018.43
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