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sv-N Den här användaren har svenska som modersmål.
en-3 This user has advanced knowledge of English.
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OSM Logo This user submits data to OpenStreetMap under the name
Master EF.
Flag of Sweden.svg Masteref has mapped in Sweden.

This is the userpage of Masteref, or EdTre on wikipedia. I'm located in Bålsta, Sweden.


The origin of my username comes from my nine year old self, which thought it was really cool. Now I just go along with it.

Where I map

I concentrate mostly on Bålsta and Håbo Municipality, sometimes Enköping and other areas around Mälaren and central Sweden.