I work with helium and (small) balloons in Graz, Austria.
If you like, see my user page in German language:
http://de.wikipedia.org/wiki/Benutzer:Helium4
(2020-04-09)
I work with helium and (small) balloons in Graz, Austria.
If you like, see my user page in German language:
http://de.wikipedia.org/wiki/Benutzer:Helium4
(2020-04-09)