search query: @author Helms, Udo / total: 1
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| title | year | author | ||
| 1. |
Sicherheitsingenieur
1995 : VOL. 26:4, p. 28-31 |
1995 | Helms, Udo |
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| title | year | author | ||
| 1. |
Sicherheitsingenieur
1995 : VOL. 26:4, p. 28-31 |
1995 | Helms, Udo |