SJ 1274-1977
Diamond wortle (English Version)
- Standard No.
- SJ 1274-1977
- Language
- Chinese, Available in English version
- Release Date
- 1978
- Published By
- Professional Standard - Electron
- Latest
- SJ 1274-1977
- Replace
- NE 1123-1964
SJ 1274-1977 history
- 1978 SJ 1274-1977 Diamond wortle
