STUDI AGIHAN KUALITAS AIR TANAH BEBAS BERDASARKAN TIPE PENGGUNAAN LAHAN PERSAWAHAN DAN PERTAMBAKAN DI PULAU KARIMUNJAWA (The Study of Unconfined Groundwater Quality Distribution Based on the Types of Nonirrigated Rice Field and Fish Pond Land Uses) - Cabral, Mario M. (Pusat Studi Lingkungan Hidup Universitas Gadjah Mada, 2005)