GOST 19869-1974 Magnetic sound records on 35-mm perforated film. Dimensions and location of magnetic sound records and magnetic heads. Technical requirements
This standard applies to one-, three-, four- and six-track magnetic phonograms on 35 mm perforated tape, recording
GOST 19869-1974 history
1974GOST 19869-1974 Magnetic sound records on 35-mm perforated film. Dimensions and location of magnetic sound records and magnetic heads. Technical requirements