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US environmental technology in the global marketplace : hearing before the Subcommittee on Foreign Commerce and Tourism of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Third Congress, first session, June 24, 1993
(1994)
The environmental goods and services industry
Sinclair-Desgagné, Bernard, (2008)
Billion dollar green : profit from the eco revolution
Smith, Tobin, (2009)