Gustav Heyer – Adreßbuch der Stadt Düren 1910
| Given name | Gustav |
|---|---|
| Family name | Heyer |
| Occupation | Ingenieur |
| Address | Bonnerstr. 53 |
| Place | Düren |
| GOV identifier | DURRENJO30FT |
| Book | Adreßbuch der Stadt Düren 1910 |
| page | 49 |
| Year | 1910 |
| Given name | Gustav |
|---|---|
| Family name | Heyer |
| Occupation | Ingenieur |
| Address | Bonnerstr. 53 |
| Place | Düren |
| GOV identifier | DURRENJO30FT |
| Book | Adreßbuch der Stadt Düren 1910 |
| page | 49 |
| Year | 1910 |