Exposure Rate 3 : Medicine. The amount of ionization in air caused by x-ray or gamma ray radiation per unit time; unit of measurement is the Roentgen per unit time (R/hr)
28- Radiation Safety Office, Harvard University Department of Environmental Health & Safety, Radiation: Glossary of Terms, Cambridge, MA, USA 2010. radiation_protection@harvard.edu. (Rad Sfty, Prot and Cont - Amer) {82}
