@misc{indiciae8918aac3952b, title = {U.S.-Soviet Collaborative Geological and Geophysical Survey of the Mid-Atlantic Ridge near 31 degrees N, the Petrov Fracture Zone}, author = {Kim D. Klitgord and Leonard V. Dmitriev and John F. Casey and Sergei Silantiev and Kevin Johnson}, year = {1993}, doi = {10.3133/ofr1994007}, url = {https://pubs.usgs.gov/publication/ofr1994007}, note = {Source identifier: ofr1994007} }