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Nutrient monitoring of sewage water irrigation: Impacts for soil quality and crop nutrition por Ryan, J., Masri, S., Qadir, Manzoor

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Phosphorus in low-Input dryland agriculture: the perspective from Syria por Ryan, J., Ibrikci, H, Rashid, A, Sommer, Rolf

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Phosphorus: agricultural nutrient por Ryan, J., Ibrikci, H, Sommer, Rolf, Rashid, A

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Micronutrient constraints to crop production in the Middle East-West Asia region: significance, research, and management por Ryan, J., Rashid, A, Torrent, J, Kwong Yau, S, Ibrikci, H, Sommer, Rolf, Bulent Erenoglu, E

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Using multiple objectives in participatory assessment of International Livestock Research: lessons learned por Kristjanson, Patricia M., Randolph, Thomas F., Thornton, Philip K., Reid, Robin S., Ryan, J.

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