Audio-visual techniques for industry
United Nations Industrial Development Organization
Audio-visual techniques for industry (Book) - New York United Nations 1978 - 84p. 30 cm.
Audio-visual equipment Audio-visual materials
659.148:6 UNI / 821
Audio-visual techniques for industry (Book) - New York United Nations 1978 - 84p. 30 cm.
Audio-visual equipment Audio-visual materials
659.148:6 UNI / 821