Proceedings of the Thirty-third Ontario Industrial Waste Conference : held at the Prince Hotel Toronto, Ontario June 15-18, 1986 : sponsored by the Ontario Ministry of the Environment

অনুরূপ উপাদানগুলি

• Proceedings of the Thirty-fourth Ontario Industrial Waste Conferences : held at the Prince Hotel Toronto, Ontario June 14-17, 1987 : sponsored by the Ontario Ministry of the Environment
  প্রকাশিত: (1987)
• Proceedings of the Twenty-Seventh Ontario Industrial Waste Conference held at the Prince Hotel, Toronto, Ontario, June 15-18, 1980
  প্রকাশিত: (1980)
• Proceedings of the twenty-fifth silver anniversary of the Ontario Industrial Waste Conference held at the Prince Hotel, June 18-21, 1978 : sponsored by the Ontario Ministry of the Environment
  প্রকাশিত: (1978)
• Proceedings [of] 19th Ontario Industrial Waste Conference, June 18-21, 1972, Toronto, Ontario
  প্রকাশিত: (1972)
• Proceedings of the twenty-sixth Ontario Industrial Waste Conference held at the Prince Hotel, Toronto, Ontario, June 17-20, 1979
  প্রকাশিত: (1979)