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Borje Holmberg
Börje Holmberg
·
Bruce Hallenbeck
title
ISBN-13
(ISBN-10)
year of publication
Distance education: A short handbook
978-91-23-30240-6
(91-23-30240-2)
1974
Growth and Structure of Distance Education
978-0-7099-4748-6
(0-7099-4748-8)
1986
Bork Hans Dieter Greive Artur und Woll Dieter (Hrsg.).