RT Journal Article SR Electronic T1 Toxicology Of Zircon JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 73 OP 76 DO 10.1136/oem.5.2.73 VO 5 IS 2 A1 Harding, H. E. YR 1948 UL http://oem.bmj.com/content/5/2/73.abstract AB