A Computer Model for Calculation of Groundwater Paths and Travel Times in Transient Three-Dimensional Flows Groundwater Data and Resources IC70 A Computer Model for Calculation of Groundwater Paths and Travel Times in Transient Three-Dimensional Flows Zheng, C.; Bradbury, K.R.; Anderson, M.P.; 1992 Report: 21 p. Download Related Collections Information Circular View Information Circular