Title: Environment : amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer, Copenhagen, November 25, 1992, ratified by Canada March 16, 1994, in force for Canada June 14, 1994 =
Subjects: Air, Atmospheric ozone, Couche d'ozone, Environmental protection, Environnement, Ozone atmosphérique, Ozone layer depletion, Pollution, Protection, Reduction, Réduction