Deismireacht APA

Smith, R. A., Alexander, R. B., & Schwarz, G. E. Natural background concentrations of nutrients in streams and rivers of the conterminous United States.

Trích dẫn kiểu Chicago

Smith, Richard A., Richard B. Alexander, và Gregory E. Schwarz. Natural Background Concentrations of Nutrients in Streams and Rivers of the Conterminous United States.

Deismireacht MLA

Smith, Richard A., Richard B. Alexander, và Gregory E. Schwarz. Natural Background Concentrations of Nutrients in Streams and Rivers of the Conterminous United States.

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