Reference number
Ïã¸ÛÁùºÏ²Ê¿ª½± 3831:1979
Ïã¸ÛÁùºÏ²Ê¿ª½± 3831:1979
Timekeeping instruments — Classification and numbering system and nomenclature of components for watches and clocks
Edition 1
1979-02
Withdrawn
Ïã¸ÛÁùºÏ²Ê¿ª½± 3831:1979
9386
Withdrawn (Edition 1, 1979)

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