BS 4847 : 1972 : Meathod of measurement of spedd fluctuations in sound recording and reproducing equipment
- London B.S.I. 1972
- 8p.
STD1871
BS 4847 : 1972
681.84 : 531.77
STD1871
BS 4847 : 1972
681.84 : 531.77
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