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holger gross
개인
1 Station
10 팔로워
Website
www.holgergross.se정보
I am a building engineer, born in 1943 and living on the island Gotland in Sweden. One of my interrests is air quality, outdoors as well as indoors.
Stations
Ammonitgatan
비스뷔, 스웨덴
4
AQI 미국, Metric