PT - JOURNAL ARTICLE AU - G. E. Harrison TI - Radioactivity AID - 10.1136/oem.21.4.327-c DP - 1964 Oct 01 TA - British Journal of Industrial Medicine PG - 327--328 VI - 21 IP - 4 4099 - http://oem.bmj.com/content/21/4/327.4.short 4100 - http://oem.bmj.com/content/21/4/327.4.full SO - Br J Ind Med1964 Oct 01; 21