A GIS framework to demarcate suitable lands for combine harvesters using satellite DEM and physical properties of soil. by Rahman, Md. Mizanur, Kamruzzaman, Mohammad, Shahid, Shamsuddin, Thorp, Kelly R., Rahaman, Hafijur, Shahriyar, Md. Mahir, Islam, A. K. M. Saiful, Huda, Md. Durrul