Smith, R. S. (1998). Profit centers in industrial ecology: The business executive's approach to the environment. Quorum Books.
Lua i Stíl Chicago (17ú heag.)Smith, Ronald S. Profit Centers in Industrial Ecology: The Business Executive's Approach to the Environment. Westport, Conn.: Quorum Books, 1998.
Lua MLA (9ú heag.)Smith, Ronald S. Profit Centers in Industrial Ecology: The Business Executive's Approach to the Environment. Quorum Books, 1998.
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