PERAN SERTA MASYARAKAT DALAM PELESTARIAN TERUMBU KARANG DI PESISIR PANTAI KABUPATEN GUNUNG KIDUL (Community Participation in the Preservation of Coral Reef at the Coastal Area of Gunung Kidul Regency, Yogyakarta, Indonesia) - Harjiyatni, Francisca Romana (Pusat Studi Lingkungan Hidup Universitas Gadjah Mada, 2001)