DIN 21942 [Withdrawn] referenced in following documents:
| Document number | Edition | Title |
|---|---|---|
| DIN 21901 | 1984-02 | Mine plans; structure and list of standards; general principles More |
| Document number | Edition | Title |
|---|---|---|
| DIN 21901 | 1984-02 | Mine plans; structure and list of standards; general principles More |