Analisis Kandungan Merkuri (Hg) pada Air, Sedimen, Ikan Keting (Arius caelatus), dan Ikan Mujair (Oreochromis mossambicus) di Kali Jagir Surabaya [Analysis Of Mercury (Hg) in Water, Sediment, Keting Fish (Arius caelatus), and Mujair Fish (Oreochromis mossambicus) In Jagir River Surabaya] - Rahardja, Boedi Setya (Faculty of Fisheries and Marine Universitas Airlangga, 2012)