Who's who in technology 1 ohneTitel
| Awduron Eraill: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | German |
| Cyhoeddwyd: |
Wörthsee b. München :
Who's who Book u. Publ. Ges.,
1979
|
| Cyfres: | Who's who in technology
|
| Rhif Galw: | IV b W 59 |
|---|