Tectonic significance of gravity and aeromagnetic investigations at the head of the Gulf of California

Sumner, J.R., 1972, Tectonic significance of gravity and aeromagnetic investigations at the head of the Gulf of California: Geological Society of America Bulletin, v. 83, no. 10, p. 3103-3120, 1 sheet, scales 1:750,000 and 1:1:000,000.