Posted on January 19, 2016January 23, 2016 by Steve Norris LESSON 4 – RADIATION UNITS OF MEASURE TOPIC 4_4 RADIATION ABSORBED DOSE (Gy) FROM X-RAYS Lesson Progress 0% Complete https://rcexraytraining.com/rce/wp-content/uploads/2016/01/Topic_4_4.mp3 Previous Topic Back to Lesson