@misc{indiciae4d219a5b3283, title = {Map showing recently active breaks along the Hayward fault zone and the southern part of the Calaveras fault zone, California}, author = {Dorothy H. Radbruch}, year = {1968}, doi = {10.3133/ofr68220}, url = {https://pubs.usgs.gov/publication/ofr68220}, note = {Source identifier: ofr68220} }