Pankratz, L.W., Hassemer, J.H., and Ackermann, H.D., 1978, Geophysical studies relating to earth fissures in central Arizona [abs.]: Geophysics, v. 44, p. 367.
Pankratz, L.W., Hassemer, J.H., and Ackermann, H.D.
Geophysics, v. 44, p. 367.
Geophysics, Gravity Survey, Refraction Seismology, Structure, Earth Fissure, Subsidence, Faulting,