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by OPEN UNIVERSITY
by Chidester, David
by Laurillard, Diana
by Bock, R. Darrell; University of California, Los Angeles Center for Research in evaluatio; Norc (Organization)
by Kibby, Michael R.; Hartley, J. Roger; Kibby, Michael R.
by Halme, Aarne; Koskinen, K.
by Paoletti, M. G.; Pimentel, D.
by Che, M.; Bond, G. C.
by Pastalan; Leon A
by Nash, George H.
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