Markus Feilner
- Mapigisto ekde:
- 18 aŭgusto 2008
- Antaŭa map-redakto:
- 24 julio 2021
Markus Feilner is an open source journalist, Author of several books and IT consultant since the mid 1990ies.
OpenStreetMap
Markus Feilner is an open source journalist, Author of several books and IT consultant since the mid 1990ies.