Film 35 mm; optical sound head for film 35 mm, requirements and general data for measuringFilm 35 mm; lecteur de son optique pour film 35 mm, spécifications et données générales pour le mesurage
DIN 15566:1981 history
1981DIN 15566:1981-05 Film 35 mm; optical sound head for film 35 mm; requirements and general data for measuring
1981DIN 15566:1981 Film 35 mm; optical sound head for film 35 mm; requirements and general data for measuring