%0 Journal Article %A William G. Clarke %T X-Rays: Their Origin, Dosage, and Practical Application %D 1957 %R 10.1136/oem.14.2.143 %J British Journal of Industrial Medicine %P 143-143 %V 14 %N 2 %U https://oem.bmj.com/content/oemed/14/2/143.full.pdf