bibliographic entry 2072259 [be/2072259]
https://w3id.org/oc/corpus/be/2072259
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Keller, J, Reigeluth, CM. Motivational design of instruction, Instructional Design Theories and Models: An Overview of Their Current Status, 1983, Hillsdale, NJ, L Erlbaum Associates, 383, 434
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