A low-tech, low-cost passive sampler for the long-term monitoring of phosphate loads in rivers and streams

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Müller, B., Stierli, R., & Gächter, R. (2008). A low-tech, low-cost passive sampler for the long-term monitoring of phosphate loads in rivers and streams. Journal of Environmental Monitoring, 10(7), 817-820. https://doi.org/10.1039/b806465b