1. Central lymph node changes and progressive massive fibrosis in coalworkers. Issue 7 (July 1986) Authors: Seal, R M; Cockcroft, A; Kung, I; Wagner, J C Journal: Thorax Issue: Volume 41:Issue 7(1986) Page Start: 531 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗