HB 812-1975
rectangular template (English Version)
- Standard No.
- HB 812-1975
- Language
- Chinese, Available in English version
- Release Date
- 1977
- Published By
- Professional Standard - Aviation
- Status
- Latest
- HB 812-1975
HB 812-1975 history
- 1977 HB 812-1975 rectangular template
- 1967 HB 812-1966 rectangular template
