%0 Journal Article %A J. A. Bonnell %T ICRU Report 19. Radiation Quantities and Units %D 1972 %R 10.1136/oem.29.4.464 %J British Journal of Industrial Medicine %P 464-464 %V 29 %N 4 %U https://oem.bmj.com/content/oemed/29/4/464.1.full.pdf