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Journal of Geographical Sciences > 2009 > 19 > 5 > 587-599
Hydrobiologia > 2006 > 559 > 1 > 297-304
Nutrient Cycling in Agroecosystems > 2000 > 58 > 1-3 > 1-12
Journal of Geographical Sciences > 2009 > 19 > 5 > 587-599
Hydrobiologia > 2006 > 559 > 1 > 297-304
Nutrient Cycling in Agroecosystems > 2000 > 58 > 1-3 > 1-12