RT Journal Article SR Electronic T1 ICRU Report 19. Radiation Quantities and Units JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 464 OP 464 DO 10.1136/oem.29.4.464 VO 29 IS 4 A1 J. A. Bonnell YR 1972 UL http://oem.bmj.com/content/29/4/464.1.abstract AB