KWALITAS BREKSI PUMIS SEBAGAI BAHAN BANGUNAN KECAMATAN PIYUNGAN, PLERET, IMOGIRI KABUPATEN BANTUL DAERAH ISTIMEWA YOGYAKARTA

摘要

Landscape of research area can be devided into five geomorphic units, they are hilly steeply topography, moderately steeply topography, homokline topography, fault scarps and flat topography. The difference of geomorphic unit is strongly influenced by the