| General info : | | Voltti is an imprint of the Finnish book publishing company Kustannusosakeyhtiö Otava. | |
| Contact info | | | |
| Websites | | () | |
| Source : | | Beijing Beibi (Chun Shu) (www.allzthings.com/ShowCollectoritem.aspx?thingnumber=39295) | |
| Relations : | | Imprint of : Kustannusosakeyhtiö Otava | |
| Copied Wikipedia parts under license : | | | |