DZ 45-1987
Technical conditions of vertical shaft geological core drilling rig (English Version)
- Standard No.
- DZ 45-1987
- Language
- Chinese, Available in English version
- Release Date
- 1987
- Published By
- Professional Standard - Geology
- Latest
- DZ 45-1987
DZ 45-1987 history
- 1987 DZ 45-1987 Technical conditions of vertical shaft geological core drilling rig
