United States. Environmental Protection Agency. (2005). Site characterization library: Version 3.0. Environmental Protection Agency.
Chicago-viite (17. p.)United States. Environmental Protection Agency. Site Characterization Library: Version 3.0. Cincinnati, OH: Environmental Protection Agency, 2005.
MLA-viite (9. p.)United States. Environmental Protection Agency. Site Characterization Library: Version 3.0. Environmental Protection Agency, 2005.
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