Radioisotope 07 : An unstable isotope of an element that decays or disintegrates spontaneously, emitting radiation. Approximately 5,000 natural and artificial radioisotopes have been identified
Health Physics Society (HPS), Radiation Terms and Definitions, Virginia, USA 2014. http://hps.org/publicinformation/radterms/#, (Rad Sfty, Prot and Cont - Amer) {825}
US Army Center for Health Promotion and Preventive Medicine CHPPM, TG 204 Glossary of Terms For Nuclear, Biological, and Chemical Agents And Defense Equipment (Section 3 - Nuclear Terms), MD, USA 2001. http://www.au.af.mil/au/awc/awcgate/army/tg204.pdf , (Def Equip/ Nucl Terms - Amer) {488}
Madison County North Carolina Government, Madison County Emergency Operations Plan Glossary (Section 3: Nuclear Terms), NC, USA 2009. http://www.madisoncountync.org/eop/Madison_EOP_PDF /Glossary.pdf, (CBRNEmr - Amer) {875}
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}