Legami Formato dall'unione diJournal of instructional developmente diEducational communication and technology : EC&TJ, ISSN 0148-5806Altra edizione su diverso supportoEducational technology research and development : a bi–monthly publication of the Association for Educational Communications & Technology, ISSN 1556-6501 ; n° Editoriale 11423Disponibile on-lineSpringerLink v.37 (1989) –
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