Harper, D. M. (1992). Eutrophication of freshwaters: Principles, problems and restoration. Chapman and Hall.
Chicago-viite (17. p.)Harper, David M. Eutrophication of Freshwaters: Principles, Problems and Restoration. Londres: Chapman and Hall, 1992.
MLA-viite (9. p.)Harper, David M. Eutrophication of Freshwaters: Principles, Problems and Restoration. Chapman and Hall, 1992.
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