DIN ISO 11665-6:2013 Measurement of radioactivity in the environment - Air: radon-222 - Part 6: Spot measurement method of the activity concentration (ISO 11665-6:2012)
2015DIN EN ISO 11665-6:2015 Measurement of radioactivity in the environment - Air: radon-222 - Part 6: Spot measurement method of the activity concentration (ISO 11665-6:2012); German version EN ISO 11665-6:2015
2013DIN ISO 11665-6:2013 Measurement of radioactivity in the environment - Air: radon-222 - Part 6: Spot measurement method of the activity concentration (ISO 11665-6:2012)