• 1 Verona Shelving Facility

• 7 Videos, Slides, Films

• 4 DVDs

• 4 Health aspects
• 3 Children and the environment
• 3 Endangered ecosystems
• 3 Environmental aspects
• 3 Environmental conditions
• 3 Lake ecology
• 3 Lake restoration
• 3 Water
• 3 Water-supply
• 2 Chemical industry
• 2 Conservation of natural resources
• 2 Environmental degradation
• 2 Environmental health
• 2 Environmental protection
• 2 Government policy
• 2 History
• 1 Air
• 1 Children
• 1 Climatic changes
• 1 Climatology
• 1 Ecosystem management
• 1 Effect of human beings on
• 1 Emerging contaminants in water
• 1 Endocrine disrupting chemicals in water

• 3 Big Picture Media Corporation
• 3 Cohen, Barri
• 3 Downie, Gordon, 1964-2017
• 3 If You Love Our Children Productions
• 3 Lee, Anita
• 3 Lentin, Mehernaz
• 3 McLaughlin, Kristina
• 3 McMahon, Kevin, 1957 or 1958-
• 3 Primitive Entertainment Inc
• 3 Rosenberg, Dorothy Goldin
• 2 Bullfrog Films
• 2 CanWest Global Communications Corp
• 2 Flahive, Gerry
• 2 McMahon, Michael
• 2 Mongrel Media
• 2 Nihon Hōsō Kyōkai
• 2 Sundance Channel
• 1 Donaldson, Christopher
• 1 Films Media Group
• 1 Films for the Humanities & Sciences (Firm)
• 1 McMahon, Michael, 1962-
• 1 Swinghammer, Kurt, 1957-
• 1 Telefilm Canada
• 1 Tran, John M. (John Minh)

• 7 English

• 3 Great Lakes (North America)
• 2 Ontario
• 1 Great Lakes
• 1 Great Lakes Region (North America)

Limit year range