00941cam a22002771 4500 gs 63000222 DLC 20260227111412.0 821011s1962 dcuab b f000 0 eng c gs 63000222 (OCoLC)8850820 U.S. Geol. Survey. Libr. MsSM MsSM DLC n-us-az QE75 .C5 no. 466 QE601 .R6 Robinson, G. M. (Geraldine Morris), 1925- Notes on earth fissures in Southern Arizona, by G.M. Robinson and D.E. Peterson. Washington, 1962. iii, 7 p. illus., fold. map (in pocket) profile. 27cm. Geological Survey (U.S.). Circular 466 Bibliography: p. 7. Geology, Structural. Physical geography Arizona. Peterson, D.E. (Dennis E.), 1906- joint author. Earth fissures in southern Arizona. 29714 29714