HB 3147-1978
rings (English Version)
- Standard No.
- HB 3147-1978
- Language
- Chinese, Available in English version
- Release Date
- 1980
- Published By
- Professional Standard - Aviation
- Status
- Latest
- HB 3147-1978
HB 3147-1978 history
- 1980 HB 3147-1978 rings
