Audio-visual techniques for industry / prepared for the United Na tions Industrial Development Organization (UNIDO) by John Halas and Roy Martin-Harris.
Material type:
TextSeries: Development and transfer of technology series ; no. 6.Publication details: New York : United Nations, 1978.Description: ix, 84 p. : ill. ; 30 cmSubject(s): Other classification: - UNO/ID/203
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