Feldmann, C. R. (1977). Self-monitoring procedures: Basic parameters for municipal effluents :student reference manual. U.S. Environmental Protection Agency, Office of Water Program Operations.
Citace podle Chicago (17th ed.)Feldmann, Charles R. Self-monitoring Procedures: Basic Parameters for Municipal Effluents :student Reference Manual. [Washington]: U.S. Environmental Protection Agency, Office of Water Program Operations, 1977.
Citace podle MLA (8th ed.)Feldmann, Charles R. Self-monitoring Procedures: Basic Parameters for Municipal Effluents :student Reference Manual. U.S. Environmental Protection Agency, Office of Water Program Operations, 1977.
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