PENGARUH KEGIATAN PENAMBANGAN EMAS TERHADAP PLANKTON DAN KUALITAS AIR SUNGAI ANSOTOK DI KABUPATENPONTIANAK (The Influence of Gold Mining on Plankton and Water Quality of Ansotok River in Pontianak Regency) - Perpustakaan UGM, i-lib ([Yogyakarta] : Fakultas Farmasi UGM, 2000)