instructional media: / robert.. heinich
By: "heinich, robert . ".
Material type:
BookPublisher: usa : macmillan 1989Edition: 3 ed.Description: "xv, 455p.; 28 cm.".ISBN: 0-02-35020-0; hard cover.Subject(s): educational technology -- audio-visual educationDDC classification: 371. 307 8 hei
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