https://catalogue-scientifique.canada.ca/record=2645662~S6*frc
Rechercher Gaskin, James E. (James Emmerson); Rechercher Aspila, K. I; Rechercher Canada. Ecosystem Sciences and Evaluation Directorate. Eco-health Branch; Rechercher Agemian, Haig
Eco-Health Branch, Ecosystem Sciences and Evaluation Directorate, 1993
Publication gouvernementale