1. Small and large diameter water table observation wells compared;Benz;Amer. Soc. Agric. Eng. Trans.,1963
2. Bonell , M. 1971 An investigation of the movement and fluctuation of groundwater in a small glacial drift catchment in Holderness, East Yorkshire Ph.D. thesis, University of Hull
3. The water table, equipotentials and streamlines in drained land;Childs;soil sci.,1943
4. Subdrainage in heavy soils;Fukunda;Theoretical considerations. Ibid.,1964
5. Studies of hillside seepage in the Iowian Drift Area;Kirkham;Soil Sci. Soc. Amer. Proc.,1947