J. Spence

Mercury levels in fish in the La Grande River area, Northern Quebec

Eric C. Smith, F. Berkes, J. Spence, 1975, Bulletin of environmental contamination and toxicology.

Potential hazard of exposure to lead. I. Handling and use of gasoline containing tetramethyllead.

J. Cholak, R. Kehoe, J. Spence, 1963, Archives of environmental health.