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to phrases
Clean Water Act
abbr., oil CWA (Federal law that regulates the discharge of toxic and nontoxic pollutants into the surface waters of the United States; 1972)
abbr., post CWA (from Environmental Protection Agency)
abbr., water.suppl. CWA (EPA)
ecol., abbr. CWA
Clean Water: 1 phrase in 1 subject
Ecology1