Referensi : Moss, B. 1980. Ecology of Freshwaters. Blackwell Scientific Publ. Oxford. 332 pp. Xiang, Siduan, and Lu, Gongrang. 1992. The Diurnal Rhytm of Phytoplankton in an Eutrophic Lake – West Lake, Hangzhou. Acta Hydrobiol. Sin., Vol. 16, No. 1, pp. 125 - 132 donasi dg belanja di Toko One
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