HUBUNGAN ZAT HARA (HNO3-DAN PO4-) SEDIMEN TERHADAP KELIMPAHAN DAN KEANEKARAGAMAN MAKROZOOBENTOS DI SUNGAI BANJIR KANAL BARAT, SEMARANG Relationship between Sediment Fertility and Macrozoobenthos Abundance and Diversity in the Banjir Kanal Barat River, Semarang Download