REVIEW OF TERMINOLOGY EXPOSURE (EXPOSURE RATE) UNIT | CONCEPT ROENTGEN EXTERNAL GAMMA OR X RADIATION CURIES — ) | | ot PER CUBIC METER| RADIONUCLIDE CONCENTRATION. CURIES _ IN AIR, WATER, FOOD PER KILOGRAM _ CURIES PER SQUARE METER CONTAMINATION OR EMANATION (RADON) CURIES _ RADIONUCLIDE INTAKE QUANTITY (PER UNIT TIME)