By Salden Ron J.C.M.   Paas Fred   Broers Nick J.   van Merriënboer Jeroen J.G.   in Instructional Science

ISSN:0020-4277|32|1-2|153-172

Springer Publishing Company ‎(2004)‎

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By Leppink Jimmie   Broers Nick J.   Imbos Tjaart   van der Vleuten Cees P.M.   Berger Martijn P.F.   in Educational Research and Evaluation

ISSN:1380-3611|18|1|37-51

Routledge Ltd‎(2012)‎

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