Koreksi Pengaruh Lereng Terhadap Nilai Spektral Tanaman Karet Pada Citra Landsat Thematic Mapper = Correction of Slope Influence in Spectral Values of Rubber Plantation On Landsat Thematic Mapper Image - Perpustakaan UGM, i-lib ([Yogyakarta] : Universitas Gadjah Mada, 2002)