check

http://www.gaebler.com/Dental+Laboratories-Business-Information++339116

Statistik Zahnärzte

https://www.omd.pt/europa/cedmanual/2015/ced-manual-2015-italia.pdf

Schwerden Firmenstatistik

firmenstatitik Schweden

http://www.scb.se/en_/Finding-statistics/Statistics-by-subject-area/Business-activities/Structure-of-the-business-sector/Statistical-Business-Register/