"Tectonics." . . . . . "Plate motions and deformations from geologic and geodetic data : semiannual report to the National Aeronautics and Space Administration for the period 1 July 1988-31 December 1988" . . . "Plate motions and deformations from geologic and geodetic data semiannual report to the National Aeronautics and Space Administration for the period 1 July 1988-31 December 1988" . . . . . . . . . . . "Strain rate." . . "Shear strain." . . "Deformation." . . "Plates (tectonics) ." . .