Kai-Wei JuangYao-Wen LiuDAR-YUAN LEE2018-09-102018-09-102005http://www.airitilibrary.com/Publication/Index/10292950-200506-201203080015-201203080015-24-35http://scholars.lib.ntu.edu.tw/handle/123456789/317177Estimating the Spatial Distribution of Soil Penetration Resistance in a Field as a Function of Water Content and Bulk Densityjournal article