DAMPAK LINGKUNGAN PEMANFAATAN ALUR SUNGAI DI KALI BOYONG, KALI KUNING DAN KALI GENDOL Evironmental Impact of Utulization River Courses in Boyong River, Kuning River and Gendol River - Perpustakaan UGM, i-lib ([Yogyakarta] : Universitas Gadjah Mada, 2011)