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Full text available from Canadian Business & Current Affairs Database: 09/01/1997 to 12/31/2011
Full text available from Earth, Atmospheric & Aquatic Science Database: 09/01/1997 to 12/31/2011
Full text available from Engineering Database: 09/01/1997 to 12/31/2011
Full text available from Environmental Science Database: 09/01/1997 to 12/31/2011
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