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. 2014 Feb 28;7:30. doi: 10.1186/1754-6834-7-30

Figure 3.

Figure 3

Seasonal changes in efficiencies of nutrients removals from synthetic wastewater by duckweed and azolla. (A) Duckweed; (B) azolla; 10, 15, 20 are the number of days from the start.