Ralph O. Kehle

Elements of Structural Geology. E. Sherbon Hills. Wiley, New York, 1963. xii + 483 pp. Illus. $8.50

Ralph O. Kehle, 1964 .

The determination of tectonic stresses through analysis of hydraulic well fracturing

Ralph O. Kehle, R. Kehle, 1964 .

Physical Processes in Geology

Ralph O. Kehle, Arvid M. Johnson, R. Kehle, 1972 .