Byerly, P The California Earthquakes of Nov. 28, 1929, and the Surface Layers of the Earth in California. [electronic resource] - Proceedings of the National Academy of Sciences of the United States of America Feb 1931 - 91-100 p. digital Publication Type: Journal Article ISSN: 0027-8424 Standard No.: 10.1073/pnas.17.2.91 doi