U.S. Environmental Protection Agency. Enhanced coagulation and enhanced precipitative softening guidance manual.
Čikaški stil citiranja (17. izdanje)U.S. Environmental Protection Agency. Enhanced Coagulation and Enhanced Precipitative Softening Guidance Manual.
MLA način citiranja (9. izdanje)U.S. Environmental Protection Agency. Enhanced Coagulation and Enhanced Precipitative Softening Guidance Manual.
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