@misc{indiciae579e4070b2d7,
  title = {Chart showing concentration and isotopic composition of hydrocarbon gases from selected springs and seeps of the northern California coast ranges},
  author = {T.D. Lorenson and Leslie B. Magoon and Keith A. Kvenvolden},
  year = {1995},
  doi = {10.3133/ofr95671},
  url = {https://pubs.usgs.gov/publication/ofr95671},
  note = {Source identifier: ofr95671}
}