1. A Preliminary Study of Some Health Hazards in the Plasma Jet Process. Issue 2 (April 1963) Authors: Hickish, D. E.; Challen, P. J. R. Journal: Occupational and environmental medicine Issue: Volume 20:Issue 2(1963) Page Start: 95 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. An Investigation of Some Health Hazards in an Inert-gas Tungsten-arc Welding-shop. Issue 4 (October 1958) Authors: Challen, P. J. R.; Hickish, D. E.; Bedford, Joan Journal: Occupational and environmental medicine Issue: Volume 15:Issue 4(1958) Page Start: 276 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Book Reviews. Issue 4 (October 1960) Authors: Challen, P. J. R. Journal: Occupational and environmental medicine Issue: Volume 17:Issue 4(1960) Page Start: 329 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
4. Chronic Chloroform Intoxication. Issue 4 (October 1958) Authors: Challen, P. J. R.; Hickish, D. E.; Bedford, Joan Journal: Occupational and environmental medicine Issue: Volume 15:Issue 4(1958) Page Start: 243 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
5. Health at Work. Issue 5202 (17th September 1960) Authors: Challen, P. J. R. Journal: BMJ Issue: Volume 2:Issue 5202(1960) Page Start: 861 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗