Bédard, L. Paul, and Bernard Lapointe. “Global Warming: Natural or Anthropogenic Le Réchauffement De La Planète: Changement Naturel Ou Effet De l’Activité Humaine?”. Geoscience Canada 18, no. 3 (September 9, 1991). Accessed November 22, 2024. https://journals.lib.unb.ca/index.php/GC/article/view/3730.