RT Journal Article SR Electronic T1 Fibre type and concentration in the lungs of workers in an asbestos cement factory (Nov 1983) JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 285 OP 285 DO 10.1136/oem.41.2.285 VO 41 IS 2 YR 1984 UL http://oem.bmj.com/content/41/2/285.abstract AB