PT - JOURNAL ARTICLE AU - William G. Clarke TI - X-Rays: Their Origin, Dosage, and Practical Application AID - 10.1136/oem.14.2.143 DP - 1957 Apr 01 TA - British Journal of Industrial Medicine PG - 143--143 VI - 14 IP - 2 4099 - http://oem.bmj.com/content/14/2/143.short 4100 - http://oem.bmj.com/content/14/2/143.full SO - Br J Ind Med1957 Apr 01; 14